Add day 25

AdventOfCode.csproj

@@ -2,9 +2,10 @@
 
     <PropertyGroup>
         <OutputType>Exe</OutputType>
-        <TargetFramework>net7.0</TargetFramework>
+        <TargetFramework>net9.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
+        <LangVersion>latest</LangVersion>
     </PropertyGroup>
 
     <ItemGroup>
@@ -12,4 +13,9 @@
       <PackageReference Include="Spectre.Console" Version="0.45.0" />
     </ItemGroup>
 
+    <ItemGroup>
+      <None Remove="Inputs\*" />
+      <EmbeddedResource Include="Inputs\*" />
+    </ItemGroup>
+
 </Project>

DayBenchmarker.cs

@@ -7,7 +7,13 @@ namespace AdventOfCode;
 [MemoryDiagnoser(false)]
 public class DayBenchmark
 {
-    private Day Day => new Day15();
+    private Day Day { get; } = new Day10();
+
+    [GlobalSetup]
+    public void Setup()
+    {
+        Day.ReadInput();
+    }
 
     [Benchmark]
     public void Part1()

Days/Day.cs

@@ -1,3 +1,5 @@
+using System.Reflection;
+
 namespace AdventOfCode.Days;
 
 public abstract class Day
@@ -5,9 +7,19 @@ public abstract class Day
     public abstract int Number { get; }
     public abstract string Name { get; }
 
+    protected string Input { get; private set; } = null!;
+
     public abstract void RunPart1(bool display = true);
     public abstract void RunPart2(bool display = true);
 
+    public void ReadInput()
+    {
+        using var inputStream = Assembly.GetExecutingAssembly()
+            .GetManifestResourceStream($"AdventOfCode.Inputs.Day{Number}.txt")!;
+
+        Input = new StreamReader(inputStream).ReadToEnd();
+    }
+
     public override string ToString()
     {
         return $"Day {Number}: {Name}";

Days/Day10.cs

@@ -1,3 +1,5 @@
+using System.Collections.Frozen;
+using System.Numerics;
 using Spectre.Console;
 
 namespace AdventOfCode.Days;
@@ -5,283 +7,163 @@ namespace AdventOfCode.Days;
 public class Day10 : Day
 {
     public override int Number => 10;
-    public override string Name => "Cathode-Ray Tube";
+    public override string Name => "Hoof It";
+
+    private const int MapSize = 60;
+
     public override void RunPart1(bool display = true)
     {
-        int cycle = 1;
-        int x = 1;
-        long sum = 0;
+        var hikingTrailsScores = 0;
 
-        // Increment sum when needed
-        void IncrementCycle()
+        var (heightMap, trailHeads) = ParseMap();
+
+        var hikingTrails = new HashSet<Point>();
+
+        foreach (var trailHead in trailHeads)
         {
-            cycle++;
+            hikingTrails.Clear();
 
-            // Check for signal stength at the start of a cycle
-            if ((cycle + 20) % 40 == 0)
-            {
-                sum += x * cycle;
-            }
-        }
+            GetHikingTrailScore(trailHead, -1);
 
-        foreach (var line in Input.ReadAllLines())
-        {
-            // noop
-            if (line == "noop")
-            {
-                // noop finished, go to next cycle
-                IncrementCycle();
-            }
-            // addx
-            else
-            {
-                var split = line.Split(' ');
-                var v = int.Parse(split[1]);
-
-                // Prepare addx
-                IncrementCycle();
-
-                // addx finished, add to x and then go to next cycle
-                x += v;
-                IncrementCycle();
-            }
+            hikingTrailsScores += hikingTrails.Count;
         }
 
         if (display)
         {
-            AnsiConsole.MarkupLine($"[green]Sum of signal strengths: [yellow]{sum}[/][/]");
+            AnsiConsole.MarkupLine($"[green]Sum of scores of hiking trails: [yellow]{hikingTrailsScores}[/][/]");
+        }
+
+        return;
+
+        void GetHikingTrailScore(Point position, int previousHeight)
+        {
+            // Out of bounds
+            if (position is { X: < 0 or >= MapSize } or { Y: < 0 or >= MapSize })
+            {
+                return;
+            }
+
+            var height = heightMap[position.X, position.Y];
+
+            if (height - previousHeight is not 1)
+            {
+                return;
+            }
+
+            if (height == 9)
+            {
+                hikingTrails.Add(position);
+            }
+
+
+            GetHikingTrailScore(position + (1, 0), height);
+            GetHikingTrailScore(position + (-1, 0), height);
+            GetHikingTrailScore(position + (0, 1), height);
+            GetHikingTrailScore(position + (0, -1), height);
         }
     }
 
     public override void RunPart2(bool display = true)
     {
-        // Setup the CRT
-        const char litPixel = '#';
-        const char darkPixel = '.';
+        var (heightMap, trailHeads) = ParseMap();
 
-        const int rowCount = 6;
-        const int columnCount = 40;
-        var crt = new char[rowCount, columnCount];
-        var crtCanvas = new Canvas(columnCount, rowCount);
+        var totalRating = 0;
 
-        // Now cycle is the position where the CRT is drawing (need to offset by 1 in the grid)
-        int cycle = 1;
-        // x is the position of the sprite
-        int x = 1;
-
-        // Draw first pixel
-        crt[0, 0] = litPixel;
-        crtCanvas.SetPixel(0, 0, Color.Red);
-
-        // Increment sum when needed
-        void IncrementCycle()
+        foreach (var trailHead in trailHeads)
         {
-            cycle++;
+            GetHikingTrailRating(trailHead, -1);
+        }
 
-            // We're done drawing the crt
-            if (cycle > 240)
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Total rating of hiking trails: [yellow]{totalRating}[/][/]");
+        }
+
+        return;
+
+        void GetHikingTrailRating(Point position, int previousHeight)
+        {
+            // Out of bounds
+            if (position is { X: < 0 or >= MapSize } or { Y: < 0 or >= MapSize })
             {
                 return;
             }
 
-            // Draw a white or black pixel
-            int row = (cycle - 1) / columnCount;
-            int column = (cycle - 1) % columnCount;
+            var height = heightMap[position.X, position.Y];
 
-            // The CRT is drawing on the sprite
-            if (column == x - 1 || column == x || column == x + 1)
+            if (height - previousHeight is not 1)
             {
-                crt[row, column] = litPixel;
-                crtCanvas.SetPixel(column, row, (cycle + row) % 2 == 0 ? Color.Green : Color.Red);
+                return;
             }
-            else
+
+            if (height == 9)
             {
-                crt[row, column] = darkPixel;
-                crtCanvas.SetPixel(column, row, Color.Black);
+                totalRating++;
             }
-        }
 
-        foreach (var line in Input.ReadAllLines())
-        {
-            // noop
-            if (line == "noop")
-            {
-                // noop finished, go to next cycle
-                IncrementCycle();
-            }
-            // addx
-            else
-            {
-                var split = line.Split(' ');
-                var v = int.Parse(split[1]);
-
-                // Prepare addx
-                IncrementCycle();
-
-                // addx finished, add to x and then go to next cycle
-                x += v;
-                IncrementCycle();
-            }
-        }
-
-        // Print the CRT
-        if (display)
-        {
-            AnsiConsole.Write(crtCanvas);
+            GetHikingTrailRating(position + (1, 0), height);
+            GetHikingTrailRating(position + (-1, 0), height);
+            GetHikingTrailRating(position + (0, 1), height);
+            GetHikingTrailRating(position + (0, -1), height);
         }
     }
 
-    #region Input
+    private (byte[,] HeightMap, List<Point> TrailHeads) ParseMap()
+    {
+        var heightMap = new byte[MapSize, MapSize];
+        var trailHeads = new List<Point>();
 
-    public const string Input =
-    """
-    noop
-    noop
-    addx 15
-    addx -10
-    noop
-    noop
-    addx 3
-    noop
-    noop
-    addx 7
-    addx 1
-    addx 4
-    addx -1
-    addx 1
-    addx 5
-    addx 1
-    noop
-    noop
-    addx 5
-    addx -1
-    noop
-    addx 3
-    noop
-    addx 3
-    addx -38
-    noop
-    addx 3
-    addx 2
-    addx 5
-    addx 2
-    addx 26
-    addx -21
-    addx -2
-    addx 5
-    addx 2
-    addx -14
-    addx 15
-    noop
-    addx 7
-    noop
-    addx 2
-    addx -22
-    addx 23
-    addx 2
-    addx 5
-    addx -40
-    noop
-    noop
-    addx 3
-    addx 2
-    noop
-    addx 24
-    addx -19
-    noop
-    noop
-    noop
-    addx 5
-    addx 5
-    addx 2
-    noop
-    noop
-    noop
-    noop
-    addx 7
-    noop
-    addx 3
-    noop
-    addx 3
-    addx -2
-    addx 2
-    addx 5
-    addx -38
-    noop
-    noop
-    noop
-    addx 5
-    addx 2
-    addx -1
-    addx 2
-    addx 30
-    addx -23
-    noop
-    noop
-    noop
-    noop
-    addx 3
-    addx 5
-    addx -11
-    addx 12
-    noop
-    addx 6
-    addx 1
-    noop
-    addx 4
-    addx 3
-    noop
-    addx -40
-    addx 4
-    addx 28
-    addx -27
-    addx 5
-    addx 2
-    addx 5
-    noop
-    noop
-    addx -2
-    addx 2
-    addx 5
-    addx 3
-    noop
-    addx 2
-    addx -25
-    addx 30
-    noop
-    addx 3
-    addx -2
-    addx 2
-    addx 5
-    addx -39
-    addx 29
-    addx -27
-    addx 5
-    noop
-    noop
-    noop
-    addx 4
-    noop
-    addx 1
-    addx 2
-    addx 5
-    addx 2
-    noop
-    noop
-    noop
-    noop
-    addx 5
-    addx 1
-    noop
-    addx 2
-    addx 5
-    addx -32
-    addx 34
-    noop
-    noop
-    noop
-    noop
-    """;
+        var y = 0;
+        foreach (var line in Input.AsSpan().EnumerateLines())
+        {
+            var x = 0;
+            foreach (var height in line)
+            {
+                var heightValue = height - '0';
 
-    #endregion
+                if (heightValue is 0)
+                {
+                    trailHeads.Add(new Point(x, y));
+                }
+
+                heightMap[x, y] = (byte)heightValue;
+
+                x++;
+            }
+
+            y++;
+        }
+
+        return (heightMap, trailHeads);
+    }
+
+
+    private readonly record struct Point(int X, int Y)
+        : IAdditionOperators<Point, Point, Point>,
+            ISubtractionOperators<Point, Point, Point>,
+            IMultiplyOperators<Point, int, Point>
+    {
+        public static Point operator +(Point left, Point right)
+        {
+            return new Point(left.X + right.X, left.Y + right.Y);
+        }
+
+        public static Point operator -(Point left, Point right)
+        {
+            return new Point(left.X - right.X, left.Y - right.Y);
+        }
+
+        public static Point operator *(Point left, int right)
+        {
+            return new Point(left.X * right, left.Y * right);
+        }
+
+        public static Point operator *(int left, Point right)
+        {
+            return new Point(right.X * left, right.Y * left);
+        }
+
+        public static implicit operator Point((int X, int Y) point)
+            => new(point.X, point.Y);
+    }
 }

Days/Day11.cs

@@ -1,233 +1,127 @@
-using System.Collections.Immutable;
+using System.Collections.Frozen;
+using System.Numerics;
 using Spectre.Console;
 
 namespace AdventOfCode.Days;
 
-public class Monkey
-{
-    public int Number { get; }
-    public long InspectionCount { get; private set; }
-
-    private readonly Queue<long> _items;
-    private readonly Func<long, long> _operation;
-    private readonly long _testDivider;
-    private readonly int _testFailMonkey;
-    private readonly int _testSuccessMonkey;
-
-    public Monkey(int number, IEnumerable<long> items, Func<long, long> operation, long testDivider, int testFailMonkey, int testSuccessMonkey)
-    {
-        Number = number;
-        _operation = operation;
-        _testDivider = testDivider;
-        _testFailMonkey = testFailMonkey;
-        _testSuccessMonkey = testSuccessMonkey;
-
-        InspectionCount = 0;
-        _items = new Queue<long>(items);
-    }
-
-    public void AddItem(long item)
-    {
-        _items.Enqueue(item);
-    }
-
-    public bool ThrowItem(IImmutableList<Monkey> monkeys, bool divideWorry = true)
-    {
-        // Return false if there's no item to throw
-        if (_items.Count < 1)
-        {
-            return false;
-        }
-
-        // Increment inspection count
-        InspectionCount++;
-
-        // Take next item to throw
-        var item = _items.Dequeue();
-
-        // Apply the operation on worry level
-        var newValue = _operation(item);
-
-        // Divide worry level by 3 before test
-        if (divideWorry)
-        {
-            newValue = newValue / 3;
-        }
-
-        // Even using this simplification, it's still needed to use longs because
-        // they sometime overflow before being simplified in part 2
-        newValue = newValue % (2*3*5*7*11*13*17*19);
-
-        // Test is a success
-        if (newValue % _testDivider == 0)
-        {
-            monkeys[_testSuccessMonkey].AddItem(newValue);
-        }
-        // Test is a fail
-        else
-        {
-            monkeys[_testFailMonkey].AddItem(newValue);
-        }
-
-        return true;
-    }
-}
-
 public class Day11 : Day
 {
     public override int Number => 11;
-    public override string Name => "Monkey in the Middle";
+    public override string Name => "Plutonian Pebbles";
+
+    private const int BlinkIterations = 25;
+
     public override void RunPart1(bool display = true)
     {
-        const int roundsCount = 20;
+        var stones = ParseStones();
 
-        var monkeys = ParseMonkeys();
-
-        // Do 20 rounds
-        for (int round = 0; round < roundsCount; round++)
+        for (var iteration = 0; iteration < BlinkIterations; iteration++)
         {
-            foreach (var monkey in monkeys)
+            var index = 0;
+
+            while (index < stones.Count)
             {
-                // Throw items while there's some
-                while (monkey.ThrowItem(monkeys)) { }
+                var stone = stones[index];
+                var stoneString = stone.ToString();
+
+                if (stone is 0)
+                {
+                    stones[index] = 1;
+                }
+                else if (stoneString.Length % 2 == 0)
+                {
+                    var splitIndex = stoneString.Length / 2;
+
+                    var leftStone = long.Parse(stoneString[..splitIndex]);
+                    var rightStone = long.Parse(stoneString[splitIndex..]);
+
+                    stones[index] = leftStone;
+                    stones.Insert(index + 1, rightStone);
+
+                    index++;
+                }
+                else
+                {
+                    stones[index] = stone * 2024;
+                }
+
+                index++;
             }
         }
 
-        var topMonkeys = monkeys.OrderByDescending(m => m.InspectionCount).Take(2).ToList();
-
         if (display)
         {
-            AnsiConsole.MarkupLine($"[green]Monkey business: [yellow]{topMonkeys[0].InspectionCount * topMonkeys[1].InspectionCount}[/][/]");
+            AnsiConsole.MarkupLine($"[green]Number of stones after blinking {BlinkIterations} times: [yellow]{stones.Count}[/][/]");
         }
     }
 
     public override void RunPart2(bool display = true)
     {
-        const int roundsCount = 10_000;
+        var stones = ParseStones().ToDictionary(s => s, _ => 1L);
 
-        var monkeys = ParseMonkeys();
-
-        // Do 10 000 rounds
-        for (int round = 0; round < roundsCount; round++)
+        for (var iteration = 0; iteration < (BlinkIterations * 3); iteration++)
         {
-            foreach (var monkey in monkeys)
+            var stonesToIterate = stones.ToList();
+
+            foreach (var (stone, count) in stonesToIterate)
             {
-                // Throw items while there's some
-                while (monkey.ThrowItem(monkeys, false)) { }
+                var stoneString = stone.ToString();
+
+                if (stone is 0)
+                {
+                    SafeAdd(stones, 1, count);
+                }
+                else if (stoneString.Length % 2 == 0)
+                {
+                    var splitIndex = stoneString.Length / 2;
+
+                    var leftStone = long.Parse(stoneString[..splitIndex]);
+                    var rightStone = long.Parse(stoneString[splitIndex..]);
+
+                    SafeAdd(stones, leftStone, count);
+                    SafeAdd(stones, rightStone, count);
+                }
+                else
+                {
+                    SafeAdd(stones, stone * 2024, count);
+
+                }
+
+                SafeAdd(stones, stone, -count);
             }
         }
 
-        var topMonkeys = monkeys.OrderByDescending(m => m.InspectionCount).Take(2).ToList();
+        var stonesCount = stones.Sum(p => p.Value);
 
         if (display)
         {
-            AnsiConsole.MarkupLine($"[green]Monkey business: [yellow]{topMonkeys[0].InspectionCount * topMonkeys[1].InspectionCount}[/][/]");
+            AnsiConsole.MarkupLine($"[green]Number of stones after blinking {BlinkIterations} times: [yellow]{stonesCount}[/][/]");
         }
     }
 
-    private static IImmutableList<Monkey> ParseMonkeys()
+    private List<long> ParseStones()
     {
-        var monkeys = new List<Monkey>();
+        var stones = new List<long>();
 
-        // Split by monkey description
-        foreach (var monkey in Input.ReplaceLineEndings("\n").Split("\n\n"))
+        var span = Input.AsSpan();
+
+        foreach (var stoneRange in span.Split(' '))
         {
-            var split = monkey.Split('\n');
-            var numberLine = split[0];
-            var itemsLine = split[1];
-            var operationLine = split[2];
-            var testDividerLine = split[3];
-            var testSuccessLine = split[4];
-            var testFailLine = split[5];
-
-            // Monkey attributes
-            var number = int.Parse(numberLine[numberLine.LastIndexOf(' ')..^1]);
-            var items = itemsLine[(itemsLine.IndexOf(':') + 2)..].Split(", ").Select(long.Parse);
-
-            // Read operation
-            operationLine = operationLine[(operationLine.IndexOf('=') + 2)..];
-            long? rightOperand = operationLine.EndsWith("old") ? null : long.Parse(operationLine.Split('+', '*')[1].Trim());
-
-            Func<long, long> operation = operationLine.Contains('+') switch
-            {
-                true => rightOperand is null
-                    ? old => old + old
-                    : old => old + (int)rightOperand,
-                false => rightOperand is null
-                    ? old => old * old
-                    : old => old * (int)rightOperand
-            };
-
-            var testDivider = long.Parse(testDividerLine[testDividerLine.LastIndexOf(' ')..]);
-            var testSuccessMonkey = int.Parse(testSuccessLine[testSuccessLine.LastIndexOf(' ')..]);
-            var testFailMonkey = int.Parse(testFailLine[testFailLine.LastIndexOf(' ')..]);
-
-            monkeys.Add(new Monkey(number, items, operation, testDivider, testFailMonkey, testSuccessMonkey));
+            stones.Add(long.Parse(span[stoneRange]));
         }
 
-        return monkeys.ToImmutableList();
+        return stones;
     }
 
-    #region Input
-
-    public const string Input =
-    """
-    Monkey 0:
-      Starting items: 89, 95, 92, 64, 87, 68
-      Operation: new = old * 11
-      Test: divisible by 2
-        If true: throw to monkey 7
-        If false: throw to monkey 4
-
-    Monkey 1:
-      Starting items: 87, 67
-      Operation: new = old + 1
-      Test: divisible by 13
-        If true: throw to monkey 3
-        If false: throw to monkey 6
-
-    Monkey 2:
-      Starting items: 95, 79, 92, 82, 60
-      Operation: new = old + 6
-      Test: divisible by 3
-        If true: throw to monkey 1
-        If false: throw to monkey 6
-
-    Monkey 3:
-      Starting items: 67, 97, 56
-      Operation: new = old * old
-      Test: divisible by 17
-        If true: throw to monkey 7
-        If false: throw to monkey 0
-
-    Monkey 4:
-      Starting items: 80, 68, 87, 94, 61, 59, 50, 68
-      Operation: new = old * 7
-      Test: divisible by 19
-        If true: throw to monkey 5
-        If false: throw to monkey 2
-
-    Monkey 5:
-      Starting items: 73, 51, 76, 59
-      Operation: new = old + 8
-      Test: divisible by 7
-        If true: throw to monkey 2
-        If false: throw to monkey 1
-
-    Monkey 6:
-      Starting items: 92
-      Operation: new = old + 5
-      Test: divisible by 11
-        If true: throw to monkey 3
-        If false: throw to monkey 0
-
-    Monkey 7:
-      Starting items: 99, 76, 78, 76, 79, 90, 89
-      Operation: new = old + 7
-      Test: divisible by 5
-        If true: throw to monkey 4
-        If false: throw to monkey 5
-    """;
-
-    #endregion
+    private void SafeAdd(Dictionary<long, long> dictionary, long key, long valueToAdd)
+    {
+        if (dictionary.TryGetValue(key, out var currentValue))
+        {
+            dictionary[key] = currentValue + valueToAdd;
+        }
+        else
+        {
+            dictionary[key] = valueToAdd;
+        }
+    }
 }

Days/Day12.cs

@@ -1,3 +1,5 @@
+using System.Collections.Frozen;
+using System.Numerics;
 using Spectre.Console;
 
 namespace AdventOfCode.Days;
@@ -5,329 +7,149 @@ namespace AdventOfCode.Days;
 public class Day12 : Day
 {
     public override int Number => 12;
-    public override string Name => "Hill Climbing Algorithm";
+    public override string Name => "Garden Groups";
 
-    public const int EndElevation = 25;
-
-    // Color map of elevation: blue -> green -> yellow -> orange -> red
-    private readonly Color[] _colorMap =
-    {
-        Color.Blue1,
-        Color.DodgerBlue1,
-        Color.DeepSkyBlue1,
-        Color.Turquoise2,
-        Color.Cyan1,
-        Color.Cyan2,
-        Color.MediumSpringGreen,
-        Color.SpringGreen1,
-        Color.SpringGreen2_1,
-        Color.Green1,
-        Color.DarkOliveGreen2,
-        Color.GreenYellow,
-        Color.DarkOliveGreen1,
-        Color.Yellow2,
-        Color.Khaki1,
-        Color.Yellow1,
-        Color.NavajoWhite1,
-        Color.LightGoldenrod2_1,
-        Color.Gold1,
-        Color.SandyBrown,
-        Color.Orange1,
-        Color.DarkOrange,
-        Color.OrangeRed1,
-        Color.IndianRed1,
-        Color.HotPink,
-        Color.MediumOrchid1_1
-    };
-
-    private (int x, int y) _end;
-    private (int x, int y) _start;
+    private const int GridSize = 140;
 
     public override void RunPart1(bool display = true)
     {
-        var map = ParseMap();
-        var canvas = DrawMap(map);
+        var areas = ParseAreas();
 
-        // Test all possible solutions
-        var minimumPathLength = ExplorePath(map);
+        var visited = new HashSet<Point>();
+        var totalPrice = 0;
 
-        // Draw solution path
-        foreach (var (x, y) in minimumPathLength.path)
+        var currentArea = 0;
+        var currentPerimeter = 0;
+
+        for (var y = 0; y < GridSize; y++)
         {
-            canvas.SetPixel(x, y, Color.White);
+            for (var x = 0; x < GridSize; x++)
+            {
+                // Skip already visited points
+                if (visited.Contains(new Point(x, y)))
+                {
+                    continue;
+                }
+
+                var id = areas[x, y];
+
+                ComputeAreaPrice(new Point(x, y), id, ref currentArea, ref currentPerimeter);
+
+                // Add price of fencing this area
+                totalPrice += currentArea * currentPerimeter;
+
+                currentArea = 0;
+                currentPerimeter = 0;
+            }
         }
 
         if (display)
         {
-            AnsiConsole.Write(canvas);
-            AnsiConsole.WriteLine();
+            AnsiConsole.MarkupLine($"[green]Total pricing: [yellow]{totalPrice}[/][/]");
+        }
 
-            AnsiConsole.MarkupLine($"[green]Minimum path length: [yellow]{minimumPathLength.length}[/][/]");
+        return;
+
+        void ComputeAreaPrice(Point position, byte id, ref int area, ref int perimeter)
+        {
+            if (!visited.Add(position))
+            {
+                return;
+            }
+
+            // Update area and perimeter
+            area++;
+            perimeter += 4;
+
+            var left = position with { X = position.X - 1 };
+            var right = position with { X = position.X + 1 };
+            var up = position with { Y = position.Y - 1 };
+            var down = position with { Y = position.Y + 1 };
+
+            if (left is { X: >= 0 and < GridSize } && areas[left.X, left.Y] == id)
+            {
+                perimeter--;
+
+                ComputeAreaPrice(left, id, ref area, ref perimeter);
+            }
+
+            if (right is { X: >= 0 and < GridSize } && areas[right.X, right.Y] == id)
+            {
+                perimeter--;
+
+                ComputeAreaPrice(right, id, ref area, ref perimeter);
+            }
+
+            if (up is { Y: >= 0 and < GridSize } && areas[up.X, up.Y] == id)
+            {
+                perimeter--;
+
+                ComputeAreaPrice(up, id, ref area, ref perimeter);
+            }
+
+            if (down is { Y: >= 0 and < GridSize } && areas[down.X, down.Y] == id)
+            {
+                perimeter--;
+
+                ComputeAreaPrice(down, id, ref area, ref perimeter);
+            }
         }
     }
 
     public override void RunPart2(bool display = true)
     {
-        var map = ParseMap();
-        var canvas = DrawMap(map);
 
-        // Test all possible solutions
-        var minimumPathLength = FindNearestStart(map);
-
-        // Draw solution path
-        foreach (var (x, y) in minimumPathLength.path)
-        {
-            canvas.SetPixel(x, y, Color.White);
-        }
-
-        if (display)
-        {
-            AnsiConsole.Write(canvas);
-            AnsiConsole.WriteLine();
-
-            AnsiConsole.MarkupLine($"[green]Minimum path length: [yellow]{minimumPathLength.length}[/][/]");
-        }
     }
 
-    private (int length, List<(int x, int y)> path) ExplorePath(byte[,] map)
+    private byte[,] ParseAreas()
     {
-        var height = map.GetLength(0);
-        var width = map.GetLength(1);
+        var areas = new byte[GridSize, GridSize];
 
-        // Store seen positions with number of steps to reach this position
-        var exploredPositions = new Dictionary<(int x, int y), int>();
-        var toExplore = new Queue<(int x, int y, int elevation, int steps, List<(int x, int y)> path)>();
-        var pathLengths = new List<(int length, List<(int x, int y)> path)>();
+        int y = 0;
 
-        toExplore.Enqueue((_start.x, _start.y, 0, 0, new()));
-
-        // Explore all possible path
-        while (toExplore.Count > 0)
+        foreach (var line in Input.AsSpan().EnumerateLines())
         {
-            var (x, y, previousElevation, steps, path) = toExplore.Dequeue();
+            int x = 0;
 
-            // If we went out of bound
-            if (x < 0 || x >= width || y < 0 || y >= height)
+            foreach (var area in line)
             {
-                continue;
+                areas[x, y] = (byte)(area - 'A');
+
+                x++;
             }
 
-            // If new elevation is too high
-            var newElevation = map[y, x];
-            if (newElevation - previousElevation > 1)
-            {
-                continue;
-            }
-
-            // If new path is not better than old path, just skip
-            if (exploredPositions.TryGetValue((x, y), out var oldSteps))
-            {
-                if (oldSteps <= steps)
-                {
-                    continue;
-                }
-            }
-
-            // Mark this position as explored and store required number of steps to reach it
-            exploredPositions[(x, y)] = steps;
-
-            // Update path
-            var newPath = new List<(int x, int y)>(path) { (x, y) };
-
-            // If we found the end, note that we could end the search here since it's a bfs, there can't be
-            // any shorter path to this point
-            if ((x, y) == _end)
-            {
-                pathLengths.Add((steps, newPath));
-
-                continue;
-            }
-
-            var nextPositions = new (int x, int y)[]
-            {
-                (x + 1, y), (x - 1, y), (x, y + 1), (x, y - 1)
-            };
-
-            foreach (var nextPosition in nextPositions)
-            {
-                toExplore.Enqueue((nextPosition.x, nextPosition.y, newElevation, steps + 1, newPath));
-            }
+            y++;
         }
 
-        return pathLengths.MinBy(p => p.length);
+        return areas;
     }
 
-    private (int length, List<(int x, int y)> path) FindNearestStart(byte[,] map)
+    private readonly record struct Point(int X, int Y)
+        : IAdditionOperators<Point, Point, Point>,
+            ISubtractionOperators<Point, Point, Point>,
+            IMultiplyOperators<Point, int, Point>
     {
-        var height = map.GetLength(0);
-        var width = map.GetLength(1);
-
-        // Store seen positions with number of steps to reach this position
-        var exploredPositions = new Dictionary<(int x, int y), int>();
-        var toExplore = new Queue<(int x, int y, int elevation, int steps, List<(int x, int y)> path)>();
-        var pathLengths = new List<(int length, List<(int x, int y)> path)>();
-
-        toExplore.Enqueue((_end.x, _end.y, EndElevation, 0, new()));
-
-        // Explore all possible path
-        while (toExplore.Count > 0)
+        public static Point operator +(Point left, Point right)
         {
-            var (x, y, previousElevation, steps, path) = toExplore.Dequeue();
-
-            // If we went out of bound
-            if (x < 0 || x >= width || y < 0 || y >= height)
-            {
-                continue;
-            }
-
-            // If new elevation is too low, skip
-            var newElevation = map[y, x];
-            if (previousElevation - newElevation > 1)
-            {
-                continue;
-            }
-
-            // If new path is not better than old path, just skip
-            if (exploredPositions.TryGetValue((x, y), out var oldSteps))
-            {
-                if (oldSteps <= steps)
-                {
-                    continue;
-                }
-            }
-
-            // Mark this position as explored and store required number of steps to reach it
-            exploredPositions[(x, y)] = steps;
-
-            // Update path
-            var newPath = new List<(int x, int y)>(path) { (x, y) };
-
-            // If we found a possible start, same as in the 1st part, we could stop here
-            if (newElevation == 0)
-            {
-                pathLengths.Add((steps, newPath));
-
-                continue;
-            }
-
-            var nextPositions = new (int x, int y)[]
-            {
-                (x + 1, y), (x - 1, y), (x, y + 1), (x, y - 1)
-            };
-
-            foreach (var nextPosition in nextPositions)
-            {
-                toExplore.Enqueue((nextPosition.x, nextPosition.y, newElevation, steps + 1, newPath));
-            }
+            return new Point(left.X + right.X, left.Y + right.Y);
         }
 
-        return pathLengths.MinBy(p => p.length);
-    }
-
-    private byte[,] ParseMap()
-    {
-        var lines = Input.ReadAllLines().ToArray();
-        var lineCount = lines.Length;
-        var columnCount = lines[0].Length;
-
-        var map = new byte[lineCount, columnCount];
-
-        for (int i = 0; i < lineCount; i++)
+        public static Point operator -(Point left, Point right)
         {
-            var line = lines[i];
-
-            for (int j = 0; j < columnCount; j++)
-            {
-                var elevation = line[j];
-
-                map[i, j] = elevation switch
-                {
-                    'S' => 0,
-                    'E' => EndElevation,
-                    _ => (byte) (elevation - 'a')
-                };
-
-                // Store the end
-                if (elevation == 'E')
-                {
-                    _end = (j, i);
-                }
-
-                // Store the start
-                if (elevation == 'S')
-                {
-                    _start = (j, i);
-                }
-            }
+            return new Point(left.X - right.X, left.Y - right.Y);
         }
 
-        return map;
-    }
-
-    private Canvas DrawMap(byte[,] map)
-    {
-        var height = map.GetLength(0);
-        var width = map.GetLength(1);
-
-        var canvas = new Canvas(width, height);
-
-        for (int x = 0; x < width; x++)
+        public static Point operator *(Point left, int right)
         {
-            for (int y = 0; y < height; y++)
-            {
-                canvas.SetPixel(x, y, _colorMap[map[y, x]]);
-            }
+            return new Point(left.X * right, left.Y * right);
         }
 
-        return canvas;
+        public static Point operator *(int left, Point right)
+        {
+            return new Point(right.X * left, right.Y * left);
+        }
+
+        public static implicit operator Point((int X, int Y) point)
+            => new(point.X, point.Y);
     }
-
-    #region Input
-
-    public const string Input =
-    """
-    abccccccaaccaaccccaaaaacccccaaaaccccccccccccccccccccccccccccccccaaaaaaaaaaaaaaaaaaaccccccccccccccccaaaccccccccccccaacccccccccccccccccccccccccccccccccccccccccaaaa
-    abaaaaccaaaaaccccaaaaaccccccaaaaccccccccccccccccccccaaacccccccccccaaaaaaaaaaaaaaaaaaccccccccccccccccaaaaccccccaaacaaccccccccccccccccccccccccccccccccccccccccaaaaa
-    abaaacccaaaaaaaacaaaaaacccccaaaaccccccccccccccccccccaaaaacccccccccaaaaaaaaaaaaaaaaacccccccccaaccccaaaaaacccccccaaaaaccccaaccccccccccccccacccccccccccccccccccaaaaa
-    abaaacccccaaaaaccccaaaaccccccaaacccccccccccccccccccaaaaaccccccccccaaaaaacacaaaaaacccccccccccaaccccaaaaacccccccccaaaaaaccaaaaaaccccccccccaaaccccacccccccccccaaaaaa
-    abaacccccaaaaaccccaacccccccccccccccaaaaacccccccccccaaaaacccccccccaaaaaaaaccaaaaaaacccccccaaaaaaaaccaaaaacccccccaaaaaaaccaaaaacccccccccccaaacccaaaccccccccccccccaa
-    abaaacccaaacaacccccccccccccccccccccaaaaaccccccccccccaaaaacccccccaaaaaaaaaccaaccaaacccccccaaaaaaaaccaacccccccccaaaaaaccaaaaaaccccccccccccaaaacaaaaccccccccccccccaa
-    abaaacccccccaaccccccccccccccccccccaaaaaaccccccccccccaaccccccaacccaaaccaaaaccccccaacccccccccaaaacccccccccccccccaacaaaccaaaaaaaccccccccccccajjjjjjjcccccccccccccccc
-    abcaacccccccccccccccccccccccccccccaaaaaaccccccccccccccccccccaaaaccccccaaaaccccccccccccccaacaaaaaccccccccccccccccccaaccccaaaaaacccccccccccjjjjjjjjjcccccaaaccccccc
-    abccccccccccccccccccccccccccccccccaaaaaaccaaccccccccccccccaaaaaacccccccaaacccccccccccaacaaaaaaaaccccccccccccccccccccccccaaccaaccccccccaiijjjjojjjjcccccaaacaccccc
-    abcccccccccccccccccccccccaaacccccccaaacacaaacccccccccccccccaaaaccccaaccccccccccccccccaaaaaaacccaccccccccccccccccccccccccaacccccccccccaiiijjooooojjkccaaaaaaaacccc
-    abccccccccccccccccccccccaaaaccccccccccaaaaaccccccccccccccccaaaaacccaaaaaccccccccccccccaaaaaacccccccccccccccccccccccccccccccccccccciiiiiiiioooooookkkcaaaaaaaacccc
-    abccccccccccccccccccccccaaaaccccccccccaaaaaaaacccccccccccccaacaaccaaaaacccccccaaacccaaaaaaaaccccccccccccccccccccccccccccccccccchiiiiiiiiooooouoookkkccaaaaaaccccc
-    abcccccccccaaccccccccccccaaaccccccccccccaaaaacccccccccccccccccccccaaaaaccccccaaaacccaaaaacaacccccccccccccaacaacccccccccccccccchhhiiiinnnooouuuuoookkkccaaaaaccccc
-    abcccccccccaaacccccccccccccccccccccccccaaaaacccccccccccccccccccccccaaaaacccccaaaaccccccaaccccccccccccccccaaaaacccccccccccccccchhhnnnnnnnnouuuuuuppkkkkaaaaaaccccc
-    abccccccaaaaaaaacccaaccccccccccccccccccaacaaccaacaaccccccccccccccccaacccccccccaaaccccccaacccccccccccccccaaaaacccccccccccccccchhhnnnnnnnnntuuxuuupppkkkkkacccccccc
-    abccccccaaaaaaaacacaaaacccccccccccccccccccaaccaaaaacccccccccccccccccccccccccccccccccccccccccccccccccccccaaaaaacccccccaacccccchhhnnnnttttttuxxxuuppppkkkkkcccccccc
-    abcccccccaaaaaaccaaaaaaccccccccccaaccccccccccaaaaaccccccccccccccccccccccccaaacccccccccccccccccccccccccccccaaaaccaaccaaacccaaahhhnnntttttttuxxxxuupppppllllccccccc
-    abcccccccaaaaaacccaaaacccccccccaaaaaaccccccccaaaaaacccccccccccccccccccccccaaacccccccccccccccccccccccccccccacccccaaaaaaacaaaaahhhppntttxxxxxxxxuuuuvpppplllccccccc
-    abcccccccaaaaaacccaaaacccccccccaaaaaacccccaaaaaaaaaccccccccccccccccccccaaaaaaaacccccccccccccccccccccaaaccccccaacaaaaaaccaaaaahhhpppttxxxxxxxxyuuvvvvvppplllcccccc
-    abcccccccaaccaacccaacaccaaaaccccaaaaacccccaaaaaaaaaccccccccccccccccccccaaaaaaaacccccccccccccccccccccaaacaaaaaaaccaaaaaaaaaaaaahhppptttxxxxxxyyyyyyvvvppplllcccccc
-    SbccccccccccccccccccccccaaaacccaaaaacccccccaaaaaaaaacaaaccccccccaacccccccaaaaaccccccccaaaaacccccccccaaaaaaaaaaaaaaaaaaaaaaaaacgggpppttxxxxEzzyyyyyvvvqqqlllcccccc
-    abccccccccccccccccccccccaaaacccaaaaacccccccaaaaaaaaccaaaccccccccaaacaaccaaaaaaccccccccaaaaacccccccaaaaaaaaaaaaaaaaaaaaaaaaaaacgggpppsssxxxyyyyyyvvvvvqqlllccccccc
-    abcccaaaccccccccccccccccaaaccccccccccccccccaaaaaaaaaaaaaccccccccaaaaaaccaaaaaacccccccaaaaaacccaaaccaaaaaccaaaaaaaaaaaacccccccccgggppssswwyyyyyyvvvvqqqqlllccccccc
-    abcaaaaaccccccccccccccccccccccccccccccccccaaaaaaaaaaaaacccccccaaaaaaacccaccaaacccccccaaaaaacccaaacccaaaaaaaaaaaccccaaacccaaaaacgggppsswwwyyyyyyvvqqqqqlllcccccccc
-    abcaaaaaaccccccccccccccccccccccccccccccccccaaccaaaaaaaaaaaccccaaaaaaacccccccccccccccccaaaaacccaaacaaaacaaaaaaaaccccaaacccaaaaacggpppsswwwywwyyyvvqqqmmmlccccccccc
-    abcaaaaaacccccccaacaaccccccccccccccccccccccccccaaaaaaaaaaaccccccaaaaacccccccccccccccccaaaccaaaaaaaaaaacccccccaacccccccccaaaaaacggpppsswwwwwwwwyvvqqqmmmcccccccccc
-    abcaaaaaccccccccaaaaaccccccccccccccccccccccccccccaaaaaaaacccccccaacaaacccccccccccccccccccccaaaaaaaaaccccccccccccccccccccaaaaaagggoossswwwwrrwwwvvqqmmmccccccccccc
-    abcaaaaacccccccaaaaaccccccccccccccccccccccccccccaaaaaaacccccccccaaccccccccccccccccccccccccccaaaaaaacccccccccccaaaccccccccaaaaagggooosssssrrrrwwwvqqmmmcccaacccccc
-    abcccccccccccccaaaaaaccccccccccccccccccccaacccccccccaaaccccccccccccccccccccccccccccccccccccccaaaaaaccccccccccccaaaaccccccaaaccgggooosssssrrrrrwwrrqmmmcccaacccccc
-    abcccccccccccccccaaaacccccccccccccccccccaaaacccccccacaaacccccccccccccccccccccccccccccccccccccaaaaaaacccccccccaaaaaacccccccccccgffoooooosoonrrrrrrrrmmmccaaaaacccc
-    abcccccccccccccccaccccccccccccccccccccccaaaacccccccaaaaacccccccccccccccccccccccccccccccccccccaaacaaacccccccccaaaaacccccccccccccfffoooooooonnnrrrrrmmmddcaaaaacccc
-    abccccccccccccccccccccccccccccccccccccccaaaaccccccccaaaaacccccccccccccccccccccccccaaaccccccccaacccccccccccccccaaaaaccccccccccccffffoooooonnnnnnrnnmmmdddaaaaacccc
-    abcccccccccccccccccccccccccccccccccccccccccccccccccaaaaaacccccccccccccccccaaaaaccaaaacccccccccccccccccccccccccaacccccccccccccccfffffffffeeeennnnnnmmdddaaaacccccc
-    abcccccccaaaccccccccaccccccccccccccccccccccccccccccaaaaccccccccccccaaaccccaaaaaccaaaaccccccccccccccccccccccccccccccccccccccccccccfffffffeeeeennnnnmddddaaaaaccccc
-    abcccaaccaaacccccaaaacccccaacccccccccccccccccccccccccaaacccccccccccaaacccaaaaaacccaaaccccccccccccccccccccccccccccccccccccccccccccccffffeeeeeeeedddddddcccaacccccc
-    abcccaaaaaaacccccaaaaaaccaaacccccccccccccccccccccccccccacccccccccccaaaaccaaaaaaccccccccccccccccccccccccccaacccccccccaaaccccccccccccccaaaaaaeeeeedddddcccccccccccc
-    abcccaaaaaacccccccaaaacccaaacaaaccccaaaacccccccccaaacaaaccccccaacccaaaacaaaaaaacccccccccccccccccccccccccaaaccccccccaaaacccccccccccccccccccaaaaeeddddccccccccccccc
-    abccccaaaaaaaacccaaaaaaaaaaaaaaaccccaaaacccccccccaaaaaaacccccaaacccaaaaaaaaaacccccccccccccccccccccccaaacaaaccccccccaaaaccccccccccccccccccccaaaccccccccccccccaaaca
-    abcccaaaaaaaaacccaacaaaaaaaaaaacccccaaaaccccccccccaaaaaacaaacaaacaaaaaaaaaacccccccccccccccaaacccccccaaaaaaaaaaccccccaaaccccccccccccccccccccaacccccccccccccccaaaaa
-    abcccaaaaaaaacccccccccccaaaaaacccccccaacccccccccccaaaaaaaaaaaaaaaaaaaaaaaaccccccccccccccccaaaacccccccaaaaaaaaacccccccccccccccccccccccccccccaaacccccccccccccccaaaa
-    abccaaaaaaacccccccccccccaaaaaaacccccccccccccccccaaaaaaaaaaaaaaaaaaaaaaaaaaacccccccccccccccaaaacccccccaaaaaaaacccccccccccccccccccccccccccccccccccccccccccccccaaaaa
-    """;
-
-    #endregion
 }

Days/Day13.cs

@@ -1,731 +1,87 @@
-using Spectre.Console;
+using System.Collections.Frozen;
+using System.Numerics;
+using System.Text;
+using Spectre.Console;
 
 namespace AdventOfCode.Days;
 
-public abstract class PacketElement : IEquatable<PacketElement>, IComparable<PacketElement>
-{
-    public override bool Equals(object? obj)
-    {
-        if (ReferenceEquals(null, obj)) return false;
-        if (ReferenceEquals(this, obj)) return true;
-        return obj.GetType() == GetType() && Equals((PacketElement) obj);
-    }
-
-    public override int GetHashCode()
-    {
-        throw new NotImplementedException();
-    }
-
-    public static bool operator ==(PacketElement left, PacketElement right)
-    {
-        return left.Equals(right);
-    }
-
-    public static bool operator !=(PacketElement left, PacketElement right)
-    {
-        return !(left == right);
-    }
-
-    public static bool operator <(PacketElement left, PacketElement right)
-    {
-        return left.CompareTo(right) < 0;
-    }
-
-
-    public static bool operator >(PacketElement left, PacketElement right)
-    {
-        return left.CompareTo(right) > 0;
-    }
-
-    public bool Equals(PacketElement? other)
-    {
-        return other is not null && (this, other) switch
-        {
-            (IntegerElement leftInteger, IntegerElement rightInteger) => leftInteger.Value == rightInteger.Value,
-            (ListElement leftList, IntegerElement rightInteger) => leftList.Elements is [var x] && x == rightInteger,
-            (IntegerElement leftInteger, ListElement rightList) => rightList.Elements is [var x] && x == leftInteger,
-            (ListElement leftList, ListElement rightList) => leftList == rightList,
-            _ => throw new ArgumentException("Can only compare lists and integers")
-        };
-    }
-
-    public int CompareTo(PacketElement? other)
-    {
-        return (this, other) switch
-        {
-            (IntegerElement leftInteger, IntegerElement rightInteger) => leftInteger.Value.CompareTo(rightInteger.Value),
-            (ListElement leftList, IntegerElement rightInteger) => leftList.CompareTo(new ListElement(new PacketElement[] { rightInteger })),
-            (IntegerElement leftInteger, ListElement rightList) => -rightList.CompareTo(new ListElement(new PacketElement[] { leftInteger })),
-            (ListElement leftList, ListElement rightList) => leftList.CompareTo(rightList),
-            _ => throw new ArgumentException("Can only compare lists and integers")
-        };
-    }
-}
-
-public class ListElement : PacketElement, IEquatable<ListElement>, IComparable<ListElement>
-{
-    public override bool Equals(object? obj)
-    {
-        if (ReferenceEquals(null, obj)) return false;
-        if (ReferenceEquals(this, obj)) return true;
-        return obj.GetType() == GetType() && Equals((ListElement) obj);
-    }
-
-    public override int GetHashCode()
-    {
-        return HashCode.Combine(base.GetHashCode(), Elements);
-    }
-
-    public IList<PacketElement> Elements { get; }
-    public int Count => Elements.Count;
-
-    public ListElement(IList<PacketElement> elements)
-    {
-        Elements = elements;
-    }
-
-    public static bool operator ==(ListElement left, ListElement right)
-    {
-        return left.Equals(right);
-    }
-
-    public static bool operator !=(ListElement left, ListElement right)
-    {
-        return !(left == right);
-    }
-
-    public static bool operator <(ListElement left, ListElement right)
-    {
-        return left.CompareTo(right) < 0;
-    }
-
-    public static bool operator >(ListElement left, ListElement right)
-    {
-        return left.CompareTo(right) > 0;
-    }
-
-    public bool Equals(ListElement? other)
-    {
-        return other is not null && Count == other.Count && Elements.Zip(other.Elements).All(t => t.First == t.Second);
-    }
-
-    public int CompareTo(ListElement? other)
-    {
-        if (other is null)
-        {
-            throw new ArgumentException("Other can't be null");
-        }
-
-        // Compare elements by elements
-        for (int i = 0; i < other.Count; i++)
-        {
-            // If there's no element in this list anymore, it's that it's lower
-            if (i >= Count)
-            {
-                return -1;
-            }
-
-            // If the two next values aren't equal, return the result, else continue
-            var compare = Elements[i].CompareTo(other.Elements[i]);
-
-            if (compare != 0)
-            {
-                return compare;
-            }
-        }
-
-        // If there's still more elements in this list, it means that it's bigger, else they are equal
-        return other.Count != Count ? 1 : 0;
-    }
-}
-
-public class IntegerElement : PacketElement
-{
-    public int Value { get; }
-
-    public IntegerElement(int value)
-    {
-        Value = value;
-    }
-}
-
 public class Day13 : Day
 {
     public override int Number => 13;
-    public override string Name => "Distress Signal";
+    public override string Name => "Claw Contraption";
+
+    private const int MaxButtonPress = 100;
+    private const int ButtonACost = 3;
+    private const int ButtonBCost = 1;
+
     public override void RunPart1(bool display = true)
     {
-        var pairs = ParsePacketPairs();
+        var lines = Input.AsSpan().EnumerateLines();
 
-        var sum = 0;
+        var minimumTokensToWin = 0;
 
-        for (int i = 0; i < pairs.Count; i++)
+        while (lines.MoveNext())
         {
-            var pair = pairs[i];
+            var (aX, aY, bX, bY, goalX, goalY) = ParseMachine(ref lines);
 
-            if (pair.left < pair.right)
+            for (var i = MaxButtonPress; i >= 0; i--)
             {
-                sum += i + 1;
+                var xOffset = bX * i;
+
+                if (xOffset > goalX)
+                {
+                    continue;
+                }
+
+                if ((goalX - xOffset) % aX != 0)
+                {
+                    continue;
+                }
+
+                var timesAPressed = (goalX - xOffset) / aX;
+
+                if (bY * i + aY * timesAPressed != goalY)
+                {
+                    continue;
+                }
+
+                minimumTokensToWin += i * ButtonBCost + timesAPressed * ButtonACost;
+
+                break;
             }
         }
 
         if (display)
         {
-            AnsiConsole.MarkupLine($"[green]Right order pair indices sum: [yellow]{sum}[/][/]");
+            AnsiConsole.MarkupLine($"[green]Minimum tokens to win all prizes: [yellow]{minimumTokensToWin}[/][/]");
         }
     }
 
     public override void RunPart2(bool display = true)
     {
-        var packets = ParsePackets();
 
-        // Add divider packets
-        var firstDivider = new ListElement(new PacketElement[] { new ListElement(new PacketElement[] { new IntegerElement(2) }) });
-        var lastDivider = new ListElement(new PacketElement[] { new ListElement(new PacketElement[] { new IntegerElement(6) }) });
-        packets.Add(firstDivider);
-        packets.Add(lastDivider);
-
-        var orderedPackets = packets.Order().ToList();
-
-        var firstDividerIndex = orderedPackets.IndexOf(firstDivider) + 1;
-        var lastDividerIndex = orderedPackets.IndexOf(lastDivider) + 1;
-
-        if (display)
-        {
-            AnsiConsole.MarkupLine($"[green]Decoder key is: [yellow]{firstDividerIndex * lastDividerIndex}[/][/]");
-        }
     }
-    private static PacketElement ReadElement(ref ReadOnlySpan<char> packet)
+
+    private (int aX, int aY, int bX, int bY, int goalX, int goalY) ParseMachine(ref SpanLineEnumerator lines)
     {
-        // This is an integer
-        if (packet[0] != '[')
-        {
-            return ReadInteger(ref packet);
-        }
+        var lineA = lines.Current;
+        lines.MoveNext();
 
-        // This is a list packet
-        return ReadList(ref packet);
+        var lineB = lines.Current;
+        lines.MoveNext();
+
+        var lineGoal = lines.Current;
+        lines.MoveNext();
+
+        return (
+            int.Parse(lineA[(lineA.IndexOf('+') + 1)..lineA.IndexOf(',')]),
+            int.Parse(lineA[(lineA.LastIndexOf('+') + 1)..]),
+
+            int.Parse(lineB[(lineB.IndexOf('+') + 1)..lineB.IndexOf(',')]),
+            int.Parse(lineB[(lineB.LastIndexOf('+') + 1)..]),
+
+            int.Parse(lineGoal[(lineGoal.IndexOf('=') + 1)..lineGoal.IndexOf(',')]),
+            int.Parse(lineGoal[(lineGoal.LastIndexOf('=') + 1)..])
+        );
     }
-
-    private static ListElement ReadList(ref ReadOnlySpan<char> packet)
-    {
-        var list = new List<PacketElement>();
-
-        while (packet[0] != ']')
-        {
-            // Skip delimiter
-            packet = packet[1..];
-
-            // If it's an empty list
-            if (packet[0] == ']')
-            {
-                break;
-            }
-
-            list.Add(ReadElement(ref packet));
-        }
-
-        // Skip closing bracket
-        packet = packet[1..];
-
-        return new ListElement(list);
-    }
-
-    private static IntegerElement ReadInteger(ref ReadOnlySpan<char> packet)
-    {
-        var intEnd = packet.IndexOfAny(',', ']');
-        var element = new IntegerElement(int.Parse(packet[..intEnd]));
-
-        packet = packet[intEnd..];
-
-        return element;
-    }
-
-    private static IList<(PacketElement left, PacketElement right)> ParsePacketPairs()
-    {
-
-        var pairs = new List<(PacketElement, PacketElement)>();
-        foreach (var pair in Input.ReplaceLineEndings("\n").Split("\n\n"))
-        {
-            var split = pair.Split('\n');
-
-            var leftSpan = split[0].AsSpan();
-            var rightSpan = split[1].AsSpan();
-
-            pairs.Add((ReadElement(ref leftSpan), ReadElement(ref rightSpan)));
-        }
-
-        return pairs;
-    }
-
-    private static IList<PacketElement> ParsePackets()
-    {
-        var packets = new List<PacketElement>();
-
-        foreach (var packet in Input.ReadAllLines().Where(l => !string.IsNullOrWhiteSpace(l)))
-        {
-            var packetSpan = packet.AsSpan();
-
-            packets.Add(ReadElement(ref packetSpan));
-        }
-
-        return packets;
-    }
-
-    #region Input
-
-    public const string Input =
-    """
-    [[5,[[3,0]],[0,[8,6,9],2,9],[5,6,[2,8,3],[0]],[6,2,[2,6,8],10]]]
-    [[6,4,[2,[2,2],8,[3,7,0,6,2]]],[4,10]]
-
-    [[[6,[10,9,7]],9,[9,[9,0,8,3],[0],3],[8,1]],[2,10,9],[[0,6,[4]],2,[2,3,[6,7,0],[1,4,2]],[[3,7,2],[],0],9],[],[[]]]
-    [[1,[1,10]]]
-
-    [[2,3,[]],[7,[[6,9,9,1,6],[0,3],10,3,[5]],[[]],[9,[],[1,0,0,1,1]]],[7,[1,[3,0],[7,10,8,5,0],2,1],4,7,3],[[5],6,4],[9,3,[4,[0,7,9,9],5,[2,0],[]],[6,[],[4,9]]]]
-    [[2,[[3,4,7],[7,2,2,6],[8,9,7,7,6],[7,8,1,6,1],[]],[],8]]
-
-    [[4,[[9,8,1],2],10,6,[[],[],7]]]
-    [[9,4,10],[0,[1,[10,4,6],[1],8],[[6,2,7,2,4],[9,3,5,6],[0,3,7],10],3],[[[5,4],2,10],2,9,4,[[6,7,2,3],[6]]],[],[]]
-
-    [[0,1],[[7,[10,0,8,1],1,4]],[]]
-    [[1,3,2,3],[1,[[],7,[6,5,8,7,9],[0,2]],[8],5,[]],[[7,8,[],[8,9,4]],[2]]]
-
-    [[7,[[6]],[4,9]]]
-    [[10],[],[[10,[10,10,5,2,1],[10],5],[4,4],[[2,1],[9]],6],[6,8]]
-
-    [[[[],[2,3,7],4],0],[[[6,5,10,2,6],10,[2,7],5,5],7,8,[0]],[[10,1,3,3,[7]],0],[]]
-    [[[[6,2,2,8],[7,4,9,4],3,[0]],7,10]]
-
-    [[6,5,5,1],[8],[]]
-    [[1,[]],[10],[10,[8,[4]],6,1],[5]]
-
-    [[[[1,1,2,4],[7,8,8,7],5,[9,1,7,0,8],[2,10,10,4]],10,[7,[6,10],[6,10,6,9],[0,8,10],7]],[8,[[],[],[1,3,0,5,10],[7,0,7]],1],[]]
-    [[6,3,[],5],[]]
-
-    [[[3],[2,[],[1,10,5,5],[1,0,3,3,1]]]]
-    [[[6,5,[4]]],[5,10,5,3],[6],[10]]
-
-    [[[[],[5,0,8,5,4],[2],0,[]],7,6,10,[7,1,10,9]],[]]
-    [[[8,[1,2,3]]],[8],[6,9,[3,1,1,[10,10,3,10,0]],3,0],[[[8,7]]]]
-
-    [[0,[[0],5,[6,3,3],[10,3,10,9]],4]]
-    [[],[5],[8],[[[10,8,10,5,3],[3,7,10,9,8],0],[[],[]]]]
-
-    [[],[10,[7,3,[6],7],[9,[3],[8],7,[1]],10],[6,9,[9,3],[[4,8,1],[10,1,4,7],7],10],[[],[3]]]
-    [[[6],5,6,10,6],[[]],[1,[6,10],8,3],[1]]
-
-    [[1,3],[10,[2],8,1,[6,6,[5],5,[2]]],[[4]],[],[]]
-    [[[],[1,0,[8],8,[0,3,6]],1],[[[6,1],8,3,1],1,[6,[6,9,3,8,7]],10,[5,[4]]]]
-
-    [[9,[6,2,[],[3,0,2,7]],0],[[[5,4,0],0,[2],[7,3,2,5,1]],9,3]]
-    [[2,[7,[5,2,4],8,5,[3,0,4,5,4]],0,8]]
-
-    [[8,6,3,[[10,1,1,7]],8]]
-    [[[9,2,5],10,5]]
-
-    [[],[6],[[[3,6,3,9]],[[2,0],7,1,[10,10,4,4,10]]]]
-    [[4,[[6,8,4,9,2],[],5,[10,1]],1,6],[[[4,2,5],4]],[[3,6]],[7,8,[[5,8,9,10],1,[6,8],1,7]]]
-
-    [[[[],10,7],[],[1,[]],8,[9,0]],[0,[[6],3,1,[0,7,5]],[[7,6,3,9,3],4,4],[],0],[],[9,2,[9,1,[0,9,4,6],[9,2],10],9]]
-    [[],[2,5,6,5,8]]
-
-    [[[[4,4],5,[7],3,[8,8,4]],2],[]]
-    [[[[6,5,4,7,1],[0,9,9]],[[7,3,7,6,10],3,[6,4,9,4]],[1,[],[]]],[[7,5,[2,4,1,1]],2,4],[],[[[4,7],[1,7,9],5,[]],4,[[7,5,1,9,10],2,5,[1,2,0,9,9]]],[9,[]]]
-
-    [[7,[[8,10,9,4,5],[1,3]],1],[[[1,1],2],[[3]],[[7,9,6,6,8],4,[5]],7],[3],[[9,[3,9],[3,1,0,9,2]],4,5,9,[[1]]]]
-    [[[4,[9],5],[[2],8,[5,7,0,0],0,9],[[2,1],[],7,[7,1],2],4,7],[[[4,7,0,10,2],[5,5,0,3,6],[10,6,3,3],4,8],2,[[1]],9,9]]
-
-    [[[[6,2,4,0]],[],[[8,3,1,5,5],1,7,4,2],5,1]]
-    [[[],0],[],[4,[[1,6],2,[8,4,1,3,10]],[5,0,[10,1,0]],8,[2,[10,8,4],[6,2,7,10,10],[8,2,4,4],[]]],[[],6],[[4,5,[2],[10,2,2,1],[4,6,5,10]],[5,[],9,[1]],[]]]
-
-    [[9]]
-    [[[],8],[7,[6,4]],[5]]
-
-    [[],[[3,5,[1],3,[3]],[5],6,[[7,2,6,9],[1,0,0,1]]],[[[5,5,2,0,10],10,7,8,7],5,7,7,[[],1,[6]]],[[]]]
-    [[[5,8,10,[9,1,3,2,4],[6,7,0,7,6]],3,[[7],3,9,4,[9]]]]
-
-    [[3,1,4,[[6]],[[4,6],1,[4]]],[0],[3,[],7]]
-    [[7]]
-
-    [[4,[[5]],[10,8,5,0]],[4]]
-    [[7,6,10,[[1],8,0,[10,5,1]]],[[[2,1,6],9,9,[4],9]],[]]
-
-    [[7,0,5,3,1],[],[[0,9,[8,4,9]],[7,[10,9,4,1,7],2,6],10,[],10],[]]
-    [[1,[],[],6,[[],10,3]]]
-
-    [[[[1,6]]],[[[5,3,7],[],[10,9,7,3,3],0,[]],3,10,5],[],[10,[2]]]
-    [[[[1,5],5],[[6],[3,2],9,[2,0,8]],[9,[6,9,4],8,0,6]],[[[8],8,10],0,[],6,[[2,7,8],0,9]],[7,1],[[[0],[9,5,9]],[[2,10]],[]]]
-
-    [[1,7,[[9],8,[1,1,8]]],[[[9,10,2,0,1],10],0,[7,[10,10],10],5],[7,1],[9,[[],[7,10]]],[[2,9,8,[0,0],[10,9,4,1]],[5],[[8,6]]]]
-    [[[[4,7,4],[],6,[5,4]],[],[7,[],[],3],[[9,3,5,1,10],[],[7,2]]],[[6,1],3,[[],[3,2],[],[3],[8,7,3,9]]]]
-
-    [[[2],0],[2,[6,1],6,5],[0,[],[[9],[],[],[10,8,6]],[[9,6,8,2,3],8,1,5,1],[[4],2,[]]],[[10,1,0,6,1],6],[4]]
-    [[1,[[4,10,2],10],[4],6,[[1,0,7],[8,1,9,5,2],6]]]
-
-    [[],[9],[[],[[4,4,1,8],3,5]]]
-    [[[[10,7],6,[]],[[1,3],[8,9,4],8,[],[2,9]],[8,3],10],[7],[8,9,10]]
-
-    [[3,[10,[],4],[[8,3],4,6,[0,6,9,3,6],[8,9,5,9]],[10,[7,1,0,1],[7,1,2,1],[],[]]]]
-    [[7,2]]
-
-    [[8,[],2,0],[[1,[10,7],[0],2,0]],[4,0,[10,[0,5,1],[1],[]],6,[9]]]
-    [[],[6,[[5,1,6,0,5],4],[7,7,[6],8,[2,1]],1,[[3,0]]],[4,10,[[5,10],[4,9,2,1,5],[7,1,5,6]]],[],[1,9,[]]]
-
-    [[[[5,7,1,2],[8],[7,0,9,7,3],[4,2,1],1],8,[4,1,[8,6,1,10],[6,8,3,2,0]],[[3],1,[2]]],[[8,[7,10,1,5,2],[1,1],[1,2]],[[0,4],2,1,[4,6,8]],1,0,3],[10,1,[[0,0,7,8,7],3]],[[4,[4],3,7,[]],3,[10,1,5,[9,6,3]],[[3],[2]],[[],1,10,[2,7]]],[[[9],7,3],8,10]]
-    [[[3]],[[10],2,3]]
-
-    [[[10,4],1,[[4,2,5,8],3,6,[6,10,5,5],5],6],[[7,3,4,5],3,[],[]]]
-    [[[[0,5,8,4],[2,3,9,1],5],[[9,7,1,5,3],6,[4],[9,2]],[]],[10,[4,1,3,2,7]],[2,9,[4,[],8,[8,10,6,10,10]],[5,8,[]]],[10,4,3,3],[]]
-
-    [[],[[[0,9,10,9],9]],[3,[[],[10],4,[4,2,7,8]],0,[[9,10,1,2],9,0],[5]]]
-    [[[[8,2,9,9],9,4,2],[[9,9],0],[9,[4,1],2,[2,5],2]],[]]
-
-    [[],[[0,[4,9]],[4,7,[9],7],[[1,8,9,7,5],[1,4],3,[9,1],4],[4,10,[1],[],[]]],[[5,4,2,10,[9,7,0,4]]],[[[0,10],4],1,5,[[10,7,0,8,9],[6,10,6]],1],[[[5,7],7,5,[]],10,[[6,10,1],[0,8,0]],[],6]]
-    [[7,[[0,5,8,1],[10,10,0,2],[3]],10],[[[0,1,2,7],4],[1,6]],[[[3],[2],[]],6],[[1],[]]]
-
-    [[2],[[],2],[3,9],[],[7,[],1,[[4],8,6,[9,4]],9]]
-    [[7,[[],[2,10,5,10],1,0,[9,2,1]]],[8,[[],0],4,9],[4,[6,3,5],7]]
-
-    [[[[5,5,6,3],[2],8,[]],[[10,1,4,7]],8,6],[[9]]]
-    [[[[8,9],4]],[[[6,0,6],[0,4,2,8,5],2,[5,6,0,9],1],10,4],[]]
-
-    [[[[0],10],[[6,2,10,8]]],[],[[[2],10,3],[],2,10,[10,[]]]]
-    [[[],1,[]],[[],8]]
-
-    [[[2,[10,8,8],[7,1,7,1]],7,1,[]],[6,[[5,10,5,6],2],2,[2,2,[6],10,8]],[[[5,1],[7],1],2,2,10]]
-    [[5,[3,[8,2,10],[3,10,10,10]],2,7]]
-
-    [[],[9,1,4,[1]],[10,[[8,9,2,1],8,6,[],6],8,5],[]]
-    [[[8,5],[[],2,7,[5,0],[10,5,6,8]]]]
-
-    [[[]],[[1,1,5,10,[4,0,10,6,1]],[10,[2,4,7,7],[6,0,8,7]],9,0]]
-    [[[[4,9,6,4,9],2,[5,1,0,1,5]]],[[1,[4,7,5],8,5],[7,[9,4,8,3,7],8,8,[6,8,3,10,2]],[[6],[8],[2,5,8,3],0]],[]]
-
-    [[[4,6,[8,2,10],9],[6],5],[[],0,[1,[4,5,9,1],2]]]
-    [[[],9,[8,6,[4]]]]
-
-    [[6,[]],[4,[],[3,[6,8],[1,6,7,6,6]],6],[],[2,5,5]]
-    [[8,[[5,3],2,2,6,6]],[]]
-
-    [[2,[]],[],[[3,9,10],9]]
-    [[[]]]
-
-    [[[9,[8,6,1,5,0],7,[5,0],[5]],[[]]]]
-    [[7,4,[[6,4,6,5]],[[9,1],[3,0]],4],[0,[[10,4,8]]],[],[],[[6,7],0,[],[]]]
-
-    [[9,3,[8],[10,[10],[7,4]]],[1,[[10,9,4],[7,6],[]],10,5,[]],[[5,7,0],[[3,6,2,8,7]],[[2,6],[],[1,3,9,8,8],10,5],6],[10],[[0,3,7],[[7,1,1,2,1],9]]]
-    [[1,[3,[],[5,3,9,2],[10,5,4,1,7],[1,5,7]]],[[4,[4,0],9,0]],[[1,[9,8,0,6,9]],2,[[7],7,[1],[10]],7],[[0,[],[6],[]]]]
-
-    [[6,1,[10,[4,1,3],1,9]],[]]
-    [[],[],[],[10]]
-
-    [[8,[[10],0,1]]]
-    [[7,2,7,8],[],[6,0,6,4],[[[5,4,5],7],6,[],[]]]
-
-    [[],[[[8,2],7,9],4,2],[7,0],[]]
-    [[0,1,9,7,5],[[[4,1,10]],8,6],[[[8,9,9,10],[6,5],[8,5,3,5]]],[[],8]]
-
-    [[[4,5,6,8],[[5,0,7,10,8],0,[],[7,4,9,9,3]],[]],[],[0,5,[6,8]],[4,[2,[0],[10,1,9,7]],8,3],[]]
-    [[],[]]
-
-    [[[4],4,9],[],[[[3,1],[4,2,5,10,1]],3,[[5,1,0,1,2]],10,[7,[10,5,9,9,9],[2,3,4,10],[2,1],9]]]
-    [[6,[10,[10]],[7,[4,0,4]],[[0,3,10],7]],[[[9,7,2],7,9,[7,4,8,4,9]],2]]
-
-    [[7],[[3,[],[5],[0,6]],[[3,10,5]]]]
-    [[3,[4,7,[9,0,1,1,7]],0],[[8]]]
-
-    [[9,4]]
-    [[9,[[5],2]],[3,3,[4,[9,3,8],0,5],3,7],[9,5,6],[10,9,2,5,1]]
-
-    [[[],[6],8],[[[8],9,[5],1],[6],4,6],[[[]],6],[],[5,[8,8,[10],[5,1,5,9],4],[5,7]]]
-    [[6,[[],2,9,3],7],[4,[[5,9],3,[3,5,5]],7,7],[[],[[2,0,2,9,3],6],[],[[9,6]],2],[5,9,[[],2,[9,10,10],[7,0,4,1],9],9,[[8,2,2]]]]
-
-    [[[7,5,[5,10,1,9],[2,9,9,3]],1,[6,9,[7,9,6]],9,[[5,1,9,10,0]]],[6,8,[]],[],[[2,[2,5,4,9,10],[3,3,3],1],7,[2,9],[4,7,7,[5],[1,2,5,9,8]]],[4,[[],[7]],8,2,1]]
-    [[4,9,3],[6,[],[6,[7,7,9,1,5],[10,4],10],10,3]]
-
-    [[[2,3,[7,5,1,0],5,[10,2,0]]],[7,6],[[[1,0,8,10,2],1]],[0],[6]]
-    [[10,6],[7,10],[[4],[]],[8,[],[[],10,2,10],[[9,3],[6,9,8],[10,2,4,1],8],2]]
-
-    [[[],4],[10,8,[3,9,[]],9],[8,5,[],2],[[8,[10,5,7,2,10],[4,10,7,9],[4,4,5]],[[5,4,6]],[],4]]
-    [[],[0,8,[5,[6,3,0,7],1,9,6],[3,8,[10,3,8,10],4],[8,[10,6,10],10,[],4]]]
-
-    [[[[],6,[5,5],8,[0,5,1]],[7,4,4,[4,1,3,0],8],3,[5,6],8],[9,[4]],[[0,[6,5],1],2,[],[],[2,[8,0,2,10,6],1,[5,8,9,9,4]]],[9,9,[],0]]
-    [[2,[[7,9,8,8,10],[],[4,5]],[[1,10],7,[1,9,1,0]]],[[4,[6,10,1,5],5,6],[],[[4,9,2,3,2],6,[3,0,2,2]],9,[]],[5,[[10,0,10,6,4],1]],[9,[0,[8,2,2],8,[5],4],[]]]
-
-    [[[8],[7,6,10]],[2,5,[[9,9,1,2],[],[],2,4],1],[],[[[7,3,8],1,1,0],[[4,8,7,10,3]],6]]
-    [[],[[9,9,[4,2]],[7,[],9,[3]],[[1,5,0],[9,3,6,1,2]],[[9,9],4,10,1],1]]
-
-    [[],[[0,[9,6],[2,4],9,3],[]],[5],[],[6,[[4,1,0,7,7],[]]]]
-    [[8,10,6,[],4],[[9,7,2,8]],[0,[5,10,[3],[6,5,9],[4,4]],[],6],[[[],2],8,[9,[3],5,[10,1],8],0],[[3]]]
-
-    [[[4,5,[],6,[]],[0,6,[2,4]],10],[[1,[10,6,4,10],[10,4]],1,7,10,7],[],[[],[4,10,[9,0]]],[[6,[10,7,0,7,10]]]]
-    [[3,[3,[4,1,1,10,10],[8,4]],4],[]]
-
-    [[10,[10,4,7]],[7,[1,2,[0,8,6,7]]],[4,6,4]]
-    [[10,10],[[[2,4,4],0],4]]
-
-    [[[[10,4],[1,4,7,1]],2],[[[]]],[3]]
-    [[[[],[5,4,5,9],8,5],[[],0,4,[1,0],6]],[[3],[[],6,7,0,[7,1]],8,7,8]]
-
-    [[[[6,6,5,8],[10,2],[4,10,0]]],[[[1],[4],[0,3,5],[0,1]],[6,[0]],8,1],[1,10,8]]
-    [[[10,3],[6,[2,2],5]],[[10],[],[[7]],[[],3,[0,0,1,8,0],3,[]],2],[],[]]
-
-    [[6],[[],7,[[1,2,0,1]]],[[7]]]
-    [[[[],[],3]],[]]
-
-    [[1,[[5,2,1,10]]]]
-    [[],[6,1,[]],[1,10,5,6,[[1],[10],2,[2],[4,6,10]]],[]]
-
-    [[10,[2,[6,9,4,10,7],[5,8],0],8,10,6],[[[4,10,1]],[[7],[7,4,10,0],[7]],10],[],[[2,[0,2,10,10,1],7,8],[9],[1,[0],[2]],[8,7,[]]],[[]]]
-    [[1,2,3,[3],[]]]
-
-    [[[],1,10,3],[],[5,2,0]]
-    [[10],[5,1,[8,[9,0,9,10]]],[],[[0],[10,10],4,1]]
-
-    [[0,[[0,5],5,2,3]]]
-    [[],[[],5],[],[0]]
-
-    [[3,[9,1,3,[0,9,1,4]]],[],[3,6,[3,10,6]]]
-    [[9,[[],[7,6],[9],1,10],7,[[4,0],[7],[1]],[1,1,3,[4,5,3,10],1]],[7,4,[[2,9,1,9,3],5,[4]],[8],8]]
-
-    [[[[4,5,7],[0],6,[6,7]],8,4]]
-    [[4,3,[[7,4,6],0,2]],[3,3,8,[[5,5,1,8],[8,2,3],7,3,10],7]]
-
-    [[[[7],3,7],0,7,2],[7,[[4,6,8,2,4]],[[6,6,5],[4,4,5,6,6]],[],5],[10,9],[]]
-    [[2,[[6,2,7,5,7],5,1,3],8],[5,[8,[5,9,8],[],[7,5,3],[4,9,0,2]]]]
-
-    [[[2]],[3,[0]],[9,10,2,[],[[7,0,8],4]]]
-    [[[6,[],7],6,5,9,7],[9,[5,[10,1]],[6],3],[0],[4,4,9,7,[3,6,3,8]]]
-
-    [[6,0]]
-    [[4],[[[4,6],[4,10,3],2,[]],3]]
-
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-
-    [[[5,[8,5]],[9,2]],[[[4,9],[3,1],[2,7,5],[2,9,2]],0],[[2,10,2,[],[4,4,4]]],[[7,[1,2,5],[],9],[8,3,[3,8,0,1,10],0,5],1,7],[[[8,0,6,2],[],4,[10]],3,[],4,8]]
-    [[[[9,8,4,2,4],[0,2,0],5],[7,[4,7,10],[]],[[4,0],2],[8,[2,0,10,4],[7,6]]],[],[1,[[1,4,9,8,6],4]]]
-    """;
-
-    #endregion
 }

Days/Day14.cs

@@ -1,582 +1,151 @@
-using System.Drawing;
+using System.Collections.Frozen;
+using System.Numerics;
+using System.Text;
 using Spectre.Console;
-using Color = Spectre.Console.Color;
 
 namespace AdventOfCode.Days;
 
-public enum CellType
-{
-    Air = 0,
-    Rock,
-    Sand
-}
-
-public class MapPath
-{
-    public IEnumerable<Point> Points => _points;
-
-    private readonly IList<Point> _points;
-
-    public MapPath()
-    {
-        _points = new List<Point>();
-    }
-
-    public MapPath(IEnumerable<Point> points)
-    {
-        _points = new List<Point>(points);
-    }
-
-    public void AddPoint(Point point)
-    {
-        _points.Add(point);
-    }
-
-    public void DrawPath(CellType[,] map, int xOffset, int yOffset)
-    {
-        if (!_points.Any())
-        {
-            return;
-        }
-
-        // Draw each point
-        var previousPoint = _points.First();
-
-        foreach (var point in _points.Skip(1))
-        {
-            // Draw horizontally
-            if (previousPoint.X != point.X)
-            {
-                var xStart = Math.Min(previousPoint.X, point.X);
-                var xEnd = Math.Max(previousPoint.X, point.X);
-
-                for (int x = xStart; x <= xEnd; x++)
-                {
-                    map[x + xOffset, point.Y + yOffset] = CellType.Rock;
-                }
-            }
-            // Draw vertically
-            else
-            {
-                var yStart = Math.Min(previousPoint.Y, point.Y);
-                var yEnd = Math.Max(previousPoint.Y, point.Y);
-
-                for (int y = yStart; y <= yEnd; y++)
-                {
-                    map[point.X + xOffset, y + yOffset] = CellType.Rock;
-                }
-            }
-
-            // Use current point for next point drawing
-            previousPoint = point;
-        }
-    }
-
-    public void DrawPath(IDictionary<Point, CellType> map)
-    {
-        if (!_points.Any())
-        {
-            return;
-        }
-
-        // Draw each point
-        var previousPoint = _points.First();
-
-        foreach (var point in _points.Skip(1))
-        {
-            // Draw horizontally
-            if (previousPoint.X != point.X)
-            {
-                var xStart = Math.Min(previousPoint.X, point.X);
-                var xEnd = Math.Max(previousPoint.X, point.X);
-
-                for (int x = xStart; x <= xEnd; x++)
-                {
-                    map[point with { X = x }] = CellType.Rock;
-                }
-            }
-            // Draw vertically
-            else
-            {
-                var yStart = Math.Min(previousPoint.Y, point.Y);
-                var yEnd = Math.Max(previousPoint.Y, point.Y);
-
-                for (int y = yStart; y <= yEnd; y++)
-                {
-                    map[point with { Y = y }] = CellType.Rock;
-                }
-            }
-
-            // Use current point for next point drawing
-            previousPoint = point;
-        }
-    }
-}
-
 public class Day14 : Day
 {
     public override int Number => 14;
-    public override string Name => "Regolith Reservoir";
+    public override string Name => "Restroom Redoubt";
 
-    private readonly Point _sandSource = new(500, 0);
-    private Point _offsetSandSource;
+    private const int Height = 103;
+    private const int HeightCenter = Height / 2;
+
+    private const int Width = 101;
+    private const int WidthCenter = Width / 2;
+
+    private const int Iterations = 100;
 
     public override void RunPart1(bool display = true)
     {
-        var map = GenerateMap();
+        var robots = ParseRobots();
 
-        // Draw canvas
-        var canvas = GenerateCanvas(map);
-        canvas.SetPixel(_offsetSandSource.X, _offsetSandSource.Y, Color.IndianRed1);
-
-        // Simulate sand fall
-        int sandBlocksCount = 0;
-        while (GenerateSand(map, canvas, _offsetSandSource))
+        for (var i = 0; i < Iterations; i++)
         {
-            sandBlocksCount++;
+            foreach (var robot in robots)
+            {
+                robot.Position = new Point(
+                    Math.Abs((Width + robot.Position.X + robot.Velocity.X) % Width),
+                    Math.Abs((Height + robot.Position.Y + robot.Velocity.Y) % Height)
+                );
+            }
         }
 
+        // Compute safety factor
+        var safetyFactor =
+            robots.Count(r => r.Position is { X: < WidthCenter, Y: < HeightCenter }) *
+            robots.Count(r => r.Position is { X: > WidthCenter, Y: < HeightCenter }) *
+            robots.Count(r => r.Position is { X: < WidthCenter, Y: > HeightCenter }) *
+            robots.Count(r => r.Position is { X: > WidthCenter, Y: > HeightCenter });
+
         if (display)
         {
-            AnsiConsole.Write(canvas);
-
-            AnsiConsole.MarkupLine($"[green]Total sand blocks: [yellow]{sandBlocksCount}[/][/]");
+            AnsiConsole.MarkupLine($"[green]Safety factor: [yellow]{safetyFactor}[/][/]");
         }
     }
 
     public override void RunPart2(bool display = true)
     {
-        var map = GenerateDictionaryMap();
+        var robots = ParseRobots();
 
-        // Compute ground level
-        var yMax = map.Keys.Max(p => p.Y);
-        var groundLevel = yMax + 2;
+        var canvas = new Canvas(Width, Height);
 
-        // Simulate sand fall
-        int sandBlocksCount = 0;
-        while (GenerateSand(map, _sandSource, groundLevel))
+        for (var i = 0; i < int.MaxValue; i++)
         {
-            sandBlocksCount++;
-        }
+            for (var x = 0; x < Width; x++)
+            {
+                for (var y = 0; y < Height; y++)
+                {
+                    canvas.SetPixel(x, y, Color.Grey23);
+                }
+            }
 
+            foreach (var robot in robots)
+            {
+                robot.Position = new Point(
+                    Math.Abs((Width + robot.Position.X + robot.Velocity.X) % Width),
+                    Math.Abs((Height + robot.Position.Y + robot.Velocity.Y) % Height)
+                );
 
-        if (display)
-        {
-            AnsiConsole.Write(GenerateCanvas(map, _sandSource));
+                canvas.SetPixel(robot.Position.X, robot.Position.Y, Color.Green1);
+            }
 
-            AnsiConsole.MarkupLine($"[green]Total sand blocks: [yellow]{sandBlocksCount}[/][/]");
+            // Display grid
+            if ((i + 1 - 46) % 101 == 0)
+            {
+                AnsiConsole.Write(canvas);
+                AnsiConsole.WriteLine();
+
+                AnsiConsole.Write($"Seconds elapsed: {i + 1}");
+
+                var key = Console.ReadKey(true).Key;
+
+                if (key is ConsoleKey.Enter)
+                {
+                    AnsiConsole.WriteLine();
+                    AnsiConsole.WriteLine();
+                    AnsiConsole.MarkupLine($"[green]Image at instant: [yellow]t={i + 1}s[/][/]");
+
+                    break;
+                }
+
+                AnsiConsole.Clear();
+            }
         }
     }
 
-    private static bool GenerateSand(CellType[,] map, Canvas canvas, in Point sandSource)
+    private List<Robot> ParseRobots()
     {
-        // Stop if source is blocked
-        if (map[sandSource.X, sandSource.Y] == CellType.Sand)
+        var robots = new List<Robot>();
+
+        foreach (var line in Input.AsSpan().EnumerateLines())
         {
-            return false;
+            var positionX = int.Parse(line[(line.IndexOf('=') + 1)..line.IndexOf(',')]);
+            var positionY = int.Parse(line[(line.IndexOf(',') + 1)..line.IndexOf(' ')]);
+
+            var velocityX = int.Parse(line[(line.LastIndexOf('=') + 1)..line.LastIndexOf(',')]);
+            var velocityY = int.Parse(line[(line.LastIndexOf(',') + 1)..]);
+
+            robots.Add(new Robot(new Point(positionX, positionY), new Point(velocityX, velocityY)));
         }
 
-        var width = map.GetLength(0);
-        var height = map.GetLength(1);
-
-        var sandPosition = new Point(sandSource.X, sandSource.Y);
-
-        // Make sand fall till we don't go outbound
-        while (sandPosition.X >= 0 && sandPosition.X < width && sandPosition.Y >= 0 && sandPosition.Y < height)
-        {
-            // Fall outbound below
-            if (sandPosition.Y + 1 >= height)
-            {
-                return false;
-            }
-
-            // Try below
-            if (map[sandPosition.X, sandPosition.Y + 1] == CellType.Air)
-            {
-                sandPosition.Y += 1;
-                continue;
-            }
-
-            // Fall outbound on the left
-            if (sandPosition.X - 1 < 0)
-            {
-                return false;
-            }
-
-            // Try on the left
-            if (map[sandPosition.X - 1, sandPosition.Y + 1] == CellType.Air)
-            {
-                sandPosition.X -= 1;
-                sandPosition.Y += 1;
-
-                continue;
-            }
-
-            // Fall outbound on the right
-            if (sandPosition.X + 1 >= width)
-            {
-                return false;
-            }
-
-            // Lastly try on the right
-            if (map[sandPosition.X + 1, sandPosition.Y + 1] == CellType.Air)
-            {
-                sandPosition.X += 1;
-                sandPosition.Y += 1;
-
-                continue;
-            }
-
-            // Can't go anywhere, stop
-            break;
-        }
-
-        map[sandPosition.X, sandPosition.Y] = CellType.Sand;
-        canvas.SetPixel(sandPosition.X, sandPosition.Y, Color.SandyBrown);
-
-        return true;
+        return robots;
     }
 
-    private static bool GenerateSand(IDictionary<Point, CellType> map, in Point sandSource, int groundY)
+    private class Robot(Point position, Point velocity)
     {
-        // Stop if source is blocked
-        if (map.GetValueOrDefault(sandSource, CellType.Air) == CellType.Sand)
+        public Point Position { get; set; } = position;
+        public Point Velocity { get; } = velocity;
+    }
+
+    private readonly record struct Point(int X, int Y)
+        : IAdditionOperators<Point, Point, Point>,
+            ISubtractionOperators<Point, Point, Point>,
+            IMultiplyOperators<Point, int, Point>
+    {
+        public static Point operator +(Point left, Point right)
         {
-            return false;
+            return new Point(left.X + right.X, left.Y + right.Y);
         }
 
-        var sandPosition = new Point(sandSource.X, sandSource.Y);
-
-        // Make sand fall till we don't go outbound
-        while (true)
+        public static Point operator -(Point left, Point right)
         {
-            // Sand is touching ground, stop here
-            if (sandPosition.Y + 1 >= groundY)
-            {
-                break;
-            }
-
-            // Try below
-            var below = sandPosition with { Y = sandPosition.Y + 1 };
-            if (map.GetValueOrDefault(below, CellType.Air) == CellType.Air)
-            {
-                sandPosition = below;
-                continue;
-            }
-
-            // Try on the left
-            var left = new Point(sandPosition.X - 1, sandPosition.Y + 1);
-            if (map.GetValueOrDefault(left, CellType.Air) == CellType.Air)
-            {
-                sandPosition = left;
-                continue;
-            }
-
-            // Lastly try on the right
-            var right = new Point(sandPosition.X + 1, sandPosition.Y + 1);
-            if (map.GetValueOrDefault(right, CellType.Air) == CellType.Air)
-            {
-                sandPosition = right;
-                continue;
-            }
-
-            // Can't go anywhere, stop
-            break;
+            return new Point(left.X - right.X, left.Y - right.Y);
         }
 
-        map[sandPosition] = CellType.Sand;
-
-        return true;
-    }
-
-    private static Canvas GenerateCanvas(CellType[,] map)
-    {
-        var width = map.GetLength(0);
-        var height = map.GetLength(1);
-
-        var canvas = new Canvas(width, height);
-
-        for (int x = 0; x < width; x++)
+        public static Point operator *(Point left, int right)
         {
-            for (int y = 0; y < height; y++)
-            {
-                canvas.SetPixel(x, y, ColorCellType(map[x, y]));
-            }
+            return new Point(left.X * right, left.Y * right);
         }
 
-        return canvas;
-    }
-
-    private static Canvas GenerateCanvas(IDictionary<Point, CellType> map, in Point sandSource)
-    {
-        // Compute dimensions
-        var xMin = map.Keys.Min(p => p.X);
-        var xMax = map.Keys.Max(p => p.X);
-
-        var yMin = map.Keys.Min(p => p.Y);
-        var yMax = map.Keys.Max(p => p.Y);
-
-        var width = xMax - xMin + 1;
-        var height = yMax - yMin + 1;
-
-        var canvas = new Canvas(width, height);
-
-        // Fill background
-        for (int x = xMin; x <= xMax; x++)
+        public static Point operator *(int left, Point right)
         {
-            for (int y = yMin; y <= yMax; y++)
-            {
-                canvas.SetPixel(x - xMin, y - yMin, Color.Grey23);
-            }
+            return new Point(right.X * left, right.Y * left);
         }
 
-        // Fill canvas
-        foreach (var (point, cellType) in map)
-        {
-            canvas.SetPixel(point.X - xMin, point.Y - yMin, ColorCellType(cellType));
-        }
-
-        canvas.SetPixel(sandSource.X - xMin, sandSource.Y - yMin, Color.IndianRed1);
-
-        return canvas;
+        public static implicit operator Point((int X, int Y) point)
+            => new(point.X, point.Y);
     }
-
-    private CellType[,] GenerateMap()
-    {
-        var paths = Input.ReadAllLines()
-            .Select(line => new MapPath(line.Split(" -> ")
-                .Select(p => p.Split(','))
-                .Select(s => new Point(int.Parse(s[0]), int.Parse(s[1])))))
-            .ToList();
-
-        // Compute xMin, xMax, yMin, yMax
-        int xMin = paths.SelectMany(p => p.Points).Min(p => p.X);
-        int xMax = paths.SelectMany(p => p.Points).Max(p => p.X);
-
-        int yMax = paths.SelectMany(p => p.Points).Max(p => p.Y);
-
-        // Construct 2D map
-        var width = xMax - xMin + 1;
-        var height = yMax + 1;
-        var map = new CellType[width, height];
-
-        // Fill rocks
-        paths.ForEach(p => p.DrawPath(map, -xMin, 0));
-
-        // Compute new sand source
-        _offsetSandSource = _sandSource;
-        _offsetSandSource.Offset(-xMin, 0);
-
-        return map;
-    }
-
-    private static Color ColorCellType(CellType cellType)
-    {
-        return cellType switch
-        {
-            CellType.Air => Color.Grey23,
-            CellType.Rock => Color.LightSlateGrey,
-            CellType.Sand => Color.SandyBrown,
-            _ => throw new Exception("Invalid CellType")
-        };
-    }
-
-    private static IDictionary<Point, CellType> GenerateDictionaryMap()
-    {
-        var paths = Input.ReadAllLines()
-            .Select(line => new MapPath(line.Split(" -> ")
-                .Select(p => p.Split(','))
-                .Select(s => new Point(int.Parse(s[0]), int.Parse(s[1])))))
-            .ToList();
-
-        // Construct 2D map
-        var map = new Dictionary<Point, CellType>();
-
-        // Fill rocks
-        paths.ForEach(p => p.DrawPath(map));
-
-        return map;
-    }
-
-    #region Input
-
-    public const string Input =
-    """
-    521,171 -> 525,171
-    497,147 -> 497,137 -> 497,147 -> 499,147 -> 499,146 -> 499,147 -> 501,147 -> 501,142 -> 501,147 -> 503,147 -> 503,144 -> 503,147 -> 505,147 -> 505,140 -> 505,147
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    476,63 -> 476,58 -> 476,63 -> 478,63 -> 478,55 -> 478,63 -> 480,63 -> 480,56 -> 480,63 -> 482,63 -> 482,57 -> 482,63 -> 484,63 -> 484,55 -> 484,63 -> 486,63 -> 486,55 -> 486,63
-    503,109 -> 507,109
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    503,150 -> 503,154 -> 501,154 -> 501,162 -> 513,162 -> 513,154 -> 507,154 -> 507,150
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    503,150 -> 503,154 -> 501,154 -> 501,162 -> 513,162 -> 513,154 -> 507,154 -> 507,150
-    481,79 -> 481,81 -> 478,81 -> 478,89 -> 490,89 -> 490,81 -> 485,81 -> 485,79
-    488,38 -> 493,38
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    476,63 -> 476,58 -> 476,63 -> 478,63 -> 478,55 -> 478,63 -> 480,63 -> 480,56 -> 480,63 -> 482,63 -> 482,57 -> 482,63 -> 484,63 -> 484,55 -> 484,63 -> 486,63 -> 486,55 -> 486,63
-    482,93 -> 496,93 -> 496,92
-    476,63 -> 476,58 -> 476,63 -> 478,63 -> 478,55 -> 478,63 -> 480,63 -> 480,56 -> 480,63 -> 482,63 -> 482,57 -> 482,63 -> 484,63 -> 484,55 -> 484,63 -> 486,63 -> 486,55 -> 486,63
-    497,29 -> 502,29
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    497,147 -> 497,137 -> 497,147 -> 499,147 -> 499,146 -> 499,147 -> 501,147 -> 501,142 -> 501,147 -> 503,147 -> 503,144 -> 503,147 -> 505,147 -> 505,140 -> 505,147
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    501,32 -> 506,32
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    490,16 -> 490,20 -> 484,20 -> 484,26 -> 499,26 -> 499,20 -> 494,20 -> 494,16
-    503,115 -> 507,115
-    524,173 -> 528,173
-    481,79 -> 481,81 -> 478,81 -> 478,89 -> 490,89 -> 490,81 -> 485,81 -> 485,79
-    486,47 -> 490,47
-    497,147 -> 497,137 -> 497,147 -> 499,147 -> 499,146 -> 499,147 -> 501,147 -> 501,142 -> 501,147 -> 503,147 -> 503,144 -> 503,147 -> 505,147 -> 505,140 -> 505,147
-    476,63 -> 476,58 -> 476,63 -> 478,63 -> 478,55 -> 478,63 -> 480,63 -> 480,56 -> 480,63 -> 482,63 -> 482,57 -> 482,63 -> 484,63 -> 484,55 -> 484,63 -> 486,63 -> 486,55 -> 486,63
-    490,16 -> 490,20 -> 484,20 -> 484,26 -> 499,26 -> 499,20 -> 494,20 -> 494,16
-    476,63 -> 476,58 -> 476,63 -> 478,63 -> 478,55 -> 478,63 -> 480,63 -> 480,56 -> 480,63 -> 482,63 -> 482,57 -> 482,63 -> 484,63 -> 484,55 -> 484,63 -> 486,63 -> 486,55 -> 486,63
-    495,50 -> 499,50
-    492,41 -> 496,41
-    476,63 -> 476,58 -> 476,63 -> 478,63 -> 478,55 -> 478,63 -> 480,63 -> 480,56 -> 480,63 -> 482,63 -> 482,57 -> 482,63 -> 484,63 -> 484,55 -> 484,63 -> 486,63 -> 486,55 -> 486,63
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    497,147 -> 497,137 -> 497,147 -> 499,147 -> 499,146 -> 499,147 -> 501,147 -> 501,142 -> 501,147 -> 503,147 -> 503,144 -> 503,147 -> 505,147 -> 505,140 -> 505,147
-    522,177 -> 522,178 -> 536,178 -> 536,177
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    503,121 -> 507,121
-    503,150 -> 503,154 -> 501,154 -> 501,162 -> 513,162 -> 513,154 -> 507,154 -> 507,150
-    515,121 -> 519,121
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    476,63 -> 476,58 -> 476,63 -> 478,63 -> 478,55 -> 478,63 -> 480,63 -> 480,56 -> 480,63 -> 482,63 -> 482,57 -> 482,63 -> 484,63 -> 484,55 -> 484,63 -> 486,63 -> 486,55 -> 486,63
-    498,35 -> 503,35
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    503,171 -> 507,171
-    509,121 -> 513,121
-    494,12 -> 494,13 -> 507,13 -> 507,12
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    500,112 -> 504,112
-    488,124 -> 488,126 -> 485,126 -> 485,129 -> 496,129 -> 496,126 -> 491,126 -> 491,124
-    476,63 -> 476,58 -> 476,63 -> 478,63 -> 478,55 -> 478,63 -> 480,63 -> 480,56 -> 480,63 -> 482,63 -> 482,57 -> 482,63 -> 484,63 -> 484,55 -> 484,63 -> 486,63 -> 486,55 -> 486,63
-    488,124 -> 488,126 -> 485,126 -> 485,129 -> 496,129 -> 496,126 -> 491,126 -> 491,124
-    476,63 -> 476,58 -> 476,63 -> 478,63 -> 478,55 -> 478,63 -> 480,63 -> 480,56 -> 480,63 -> 482,63 -> 482,57 -> 482,63 -> 484,63 -> 484,55 -> 484,63 -> 486,63 -> 486,55 -> 486,63
-    512,173 -> 516,173
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    502,38 -> 507,38
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    503,150 -> 503,154 -> 501,154 -> 501,162 -> 513,162 -> 513,154 -> 507,154 -> 507,150
-    497,147 -> 497,137 -> 497,147 -> 499,147 -> 499,146 -> 499,147 -> 501,147 -> 501,142 -> 501,147 -> 503,147 -> 503,144 -> 503,147 -> 505,147 -> 505,140 -> 505,147
-    497,147 -> 497,137 -> 497,147 -> 499,147 -> 499,146 -> 499,147 -> 501,147 -> 501,142 -> 501,147 -> 503,147 -> 503,144 -> 503,147 -> 505,147 -> 505,140 -> 505,147
-    506,169 -> 510,169
-    490,16 -> 490,20 -> 484,20 -> 484,26 -> 499,26 -> 499,20 -> 494,20 -> 494,16
-    497,147 -> 497,137 -> 497,147 -> 499,147 -> 499,146 -> 499,147 -> 501,147 -> 501,142 -> 501,147 -> 503,147 -> 503,144 -> 503,147 -> 505,147 -> 505,140 -> 505,147
-    503,150 -> 503,154 -> 501,154 -> 501,162 -> 513,162 -> 513,154 -> 507,154 -> 507,150
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    488,124 -> 488,126 -> 485,126 -> 485,129 -> 496,129 -> 496,126 -> 491,126 -> 491,124
-    491,121 -> 495,121
-    497,147 -> 497,137 -> 497,147 -> 499,147 -> 499,146 -> 499,147 -> 501,147 -> 501,142 -> 501,147 -> 503,147 -> 503,144 -> 503,147 -> 505,147 -> 505,140 -> 505,147
-    518,173 -> 522,173
-    501,50 -> 505,50
-    497,115 -> 501,115
-    498,47 -> 502,47
-    476,63 -> 476,58 -> 476,63 -> 478,63 -> 478,55 -> 478,63 -> 480,63 -> 480,56 -> 480,63 -> 482,63 -> 482,57 -> 482,63 -> 484,63 -> 484,55 -> 484,63 -> 486,63 -> 486,55 -> 486,63
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    518,169 -> 522,169
-    476,63 -> 476,58 -> 476,63 -> 478,63 -> 478,55 -> 478,63 -> 480,63 -> 480,56 -> 480,63 -> 482,63 -> 482,57 -> 482,63 -> 484,63 -> 484,55 -> 484,63 -> 486,63 -> 486,55 -> 486,63
-    489,44 -> 493,44
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    481,79 -> 481,81 -> 478,81 -> 478,89 -> 490,89 -> 490,81 -> 485,81 -> 485,79
-    509,167 -> 513,167
-    476,63 -> 476,58 -> 476,63 -> 478,63 -> 478,55 -> 478,63 -> 480,63 -> 480,56 -> 480,63 -> 482,63 -> 482,57 -> 482,63 -> 484,63 -> 484,55 -> 484,63 -> 486,63 -> 486,55 -> 486,63
-    487,133 -> 487,134 -> 501,134
-    481,79 -> 481,81 -> 478,81 -> 478,89 -> 490,89 -> 490,81 -> 485,81 -> 485,79
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    512,118 -> 516,118
-    490,16 -> 490,20 -> 484,20 -> 484,26 -> 499,26 -> 499,20 -> 494,20 -> 494,16
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    512,165 -> 516,165
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    491,35 -> 496,35
-    500,173 -> 504,173
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    490,16 -> 490,20 -> 484,20 -> 484,26 -> 499,26 -> 499,20 -> 494,20 -> 494,16
-    503,150 -> 503,154 -> 501,154 -> 501,162 -> 513,162 -> 513,154 -> 507,154 -> 507,150
-    483,50 -> 487,50
-    481,79 -> 481,81 -> 478,81 -> 478,89 -> 490,89 -> 490,81 -> 485,81 -> 485,79
-    500,118 -> 504,118
-    497,147 -> 497,137 -> 497,147 -> 499,147 -> 499,146 -> 499,147 -> 501,147 -> 501,142 -> 501,147 -> 503,147 -> 503,144 -> 503,147 -> 505,147 -> 505,140 -> 505,147
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    492,47 -> 496,47
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    497,147 -> 497,137 -> 497,147 -> 499,147 -> 499,146 -> 499,147 -> 501,147 -> 501,142 -> 501,147 -> 503,147 -> 503,144 -> 503,147 -> 505,147 -> 505,140 -> 505,147
-    476,63 -> 476,58 -> 476,63 -> 478,63 -> 478,55 -> 478,63 -> 480,63 -> 480,56 -> 480,63 -> 482,63 -> 482,57 -> 482,63 -> 484,63 -> 484,55 -> 484,63 -> 486,63 -> 486,55 -> 486,63
-    495,38 -> 500,38
-    494,12 -> 494,13 -> 507,13 -> 507,12
-    476,63 -> 476,58 -> 476,63 -> 478,63 -> 478,55 -> 478,63 -> 480,63 -> 480,56 -> 480,63 -> 482,63 -> 482,57 -> 482,63 -> 484,63 -> 484,55 -> 484,63 -> 486,63 -> 486,55 -> 486,63
-    497,147 -> 497,137 -> 497,147 -> 499,147 -> 499,146 -> 499,147 -> 501,147 -> 501,142 -> 501,147 -> 503,147 -> 503,144 -> 503,147 -> 505,147 -> 505,140 -> 505,147
-    494,118 -> 498,118
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    488,124 -> 488,126 -> 485,126 -> 485,129 -> 496,129 -> 496,126 -> 491,126 -> 491,124
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    497,147 -> 497,137 -> 497,147 -> 499,147 -> 499,146 -> 499,147 -> 501,147 -> 501,142 -> 501,147 -> 503,147 -> 503,144 -> 503,147 -> 505,147 -> 505,140 -> 505,147
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    488,124 -> 488,126 -> 485,126 -> 485,129 -> 496,129 -> 496,126 -> 491,126 -> 491,124
-    509,115 -> 513,115
-    497,147 -> 497,137 -> 497,147 -> 499,147 -> 499,146 -> 499,147 -> 501,147 -> 501,142 -> 501,147 -> 503,147 -> 503,144 -> 503,147 -> 505,147 -> 505,140 -> 505,147
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    506,173 -> 510,173
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    481,79 -> 481,81 -> 478,81 -> 478,89 -> 490,89 -> 490,81 -> 485,81 -> 485,79
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    505,35 -> 510,35
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    506,118 -> 510,118
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    503,150 -> 503,154 -> 501,154 -> 501,162 -> 513,162 -> 513,154 -> 507,154 -> 507,150
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    509,171 -> 513,171
-    494,12 -> 494,13 -> 507,13 -> 507,12
-    509,38 -> 514,38
-    488,124 -> 488,126 -> 485,126 -> 485,129 -> 496,129 -> 496,126 -> 491,126 -> 491,124
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    476,63 -> 476,58 -> 476,63 -> 478,63 -> 478,55 -> 478,63 -> 480,63 -> 480,56 -> 480,63 -> 482,63 -> 482,57 -> 482,63 -> 484,63 -> 484,55 -> 484,63 -> 486,63 -> 486,55 -> 486,63
-    495,44 -> 499,44
-    482,93 -> 496,93 -> 496,92
-    515,171 -> 519,171
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    481,79 -> 481,81 -> 478,81 -> 478,89 -> 490,89 -> 490,81 -> 485,81 -> 485,79
-    522,177 -> 522,178 -> 536,178 -> 536,177
-    476,63 -> 476,58 -> 476,63 -> 478,63 -> 478,55 -> 478,63 -> 480,63 -> 480,56 -> 480,63 -> 482,63 -> 482,57 -> 482,63 -> 484,63 -> 484,55 -> 484,63 -> 486,63 -> 486,55 -> 486,63
-    497,147 -> 497,137 -> 497,147 -> 499,147 -> 499,146 -> 499,147 -> 501,147 -> 501,142 -> 501,147 -> 503,147 -> 503,144 -> 503,147 -> 505,147 -> 505,140 -> 505,147
-    515,167 -> 519,167
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    506,112 -> 510,112
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    522,177 -> 522,178 -> 536,178 -> 536,177
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    488,124 -> 488,126 -> 485,126 -> 485,129 -> 496,129 -> 496,126 -> 491,126 -> 491,124
-    487,133 -> 487,134 -> 501,134
-    497,121 -> 501,121
-    476,63 -> 476,58 -> 476,63 -> 478,63 -> 478,55 -> 478,63 -> 480,63 -> 480,56 -> 480,63 -> 482,63 -> 482,57 -> 482,63 -> 484,63 -> 484,55 -> 484,63 -> 486,63 -> 486,55 -> 486,63
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    489,50 -> 493,50
-    465,76 -> 465,71 -> 465,76 -> 467,76 -> 467,72 -> 467,76 -> 469,76 -> 469,68 -> 469,76 -> 471,76 -> 471,73 -> 471,76 -> 473,76 -> 473,71 -> 473,76 -> 475,76 -> 475,70 -> 475,76 -> 477,76 -> 477,71 -> 477,76 -> 479,76 -> 479,73 -> 479,76 -> 481,76 -> 481,74 -> 481,76 -> 483,76 -> 483,72 -> 483,76
-    512,169 -> 516,169
-    490,16 -> 490,20 -> 484,20 -> 484,26 -> 499,26 -> 499,20 -> 494,20 -> 494,16
-    494,32 -> 499,32
-    490,16 -> 490,20 -> 484,20 -> 484,26 -> 499,26 -> 499,20 -> 494,20 -> 494,16
-    488,106 -> 488,97 -> 488,106 -> 490,106 -> 490,100 -> 490,106 -> 492,106 -> 492,101 -> 492,106 -> 494,106 -> 494,105 -> 494,106 -> 496,106 -> 496,96 -> 496,106 -> 498,106 -> 498,102 -> 498,106 -> 500,106 -> 500,101 -> 500,106 -> 502,106 -> 502,102 -> 502,106 -> 504,106 -> 504,100 -> 504,106
-    """;
-
-    #endregion
 }

Days/Day15.cs

@@ -1,292 +1,193 @@
-using System.Collections.Concurrent;
-using System.Drawing;
+using System.Collections.Frozen;
+using System.Numerics;
+using System.Text;
 using Spectre.Console;
 
 namespace AdventOfCode.Days;
 
-public class SensorBeaconPair
-{
-    public Point SensorPosition { get; }
-    public Point BeaconPosition { get; }
-
-    public int SensorRange =>
-        Math.Abs(SensorPosition.X - BeaconPosition.X) + Math.Abs(SensorPosition.Y - BeaconPosition.Y);
-
-    public SensorBeaconPair(in Point sensorPosition, in Point beaconPosition)
-    {
-        SensorPosition = sensorPosition;
-        BeaconPosition = beaconPosition;
-    }
-}
-
-public class CoverRange
-{
-    public int Start { get; }
-    public int End { get; }
-    public int Covered => End - Start + 1;
-
-    public CoverRange(int start, int end)
-    {
-        Start = start;
-        End = end;
-    }
-
-    public CoverRange(CoverRange coverRange)
-    {
-        Start = coverRange.Start;
-        End = coverRange.End;
-    }
-
-    public CoverRange Subtract(CoverRange other)
-    {
-        // Overlap on left
-        int newStart;
-        if (other.Start <= Start && other.End >= Start)
-        {
-            newStart = other.End + 1;
-        }
-        else
-        {
-            newStart = Start;
-        }
-
-        // Overlap on right
-        int newEnd;
-        if (other.Start <= End && other.End >= End)
-        {
-            newEnd = other.Start - 1;
-        }
-        else
-        {
-            newEnd = End;
-        }
-
-        return new CoverRange(newStart, newEnd);
-    }
-
-    public static CoverRange operator -(CoverRange left, CoverRange right)
-    {
-        return left.Subtract(right);
-    }
-}
-
 public class Day15 : Day
 {
     public override int Number => 15;
-    public override string Name => "Beacon Exclusion Zone";
+    public override string Name => "Warehouse Woes";
+
+    private const int Size = 50;
+
+    private const char Wall = '#';
+    private const char Box = 'O';
+    private const char Empty = '.';
+
+    private const char InstructionLeft = '<';
+    private const char InstructionRight = '>';
+    private const char InstructionUp = '^';
+    private const char InstructionDown = 'v';
+
     public override void RunPart1(bool display = true)
     {
-        const int targetY = 2_000_000;
+        var (map, position, instructions) = ParseMap();
 
-        // Parse pairs
-        var pairs = ParsePairs();
-
-        var ranges = new List<CoverRange>(pairs.Count);
-
-        // Get which columns are included on line targetY, remove the ones which already contains a beacon
-        var beaconsOnTargetY = new HashSet<int>();
-        foreach (var sensorBeaconPair in pairs)
+        foreach (var instruction in instructions)
         {
-            // Get covered columns on y line
-            var xCenter = sensorBeaconPair.SensorPosition.X;
-            var coveredColumns = sensorBeaconPair.SensorRange - Math.Abs(sensorBeaconPair.SensorPosition.Y - targetY);
-
-            if (coveredColumns > 0)
+            var direction = instruction switch
             {
-                ranges.Add(new CoverRange(xCenter - coveredColumns, xCenter + coveredColumns));
+                InstructionLeft => new Point(-1, 0),
+                InstructionRight => new Point(1, 0),
+                InstructionUp => new Point(0, -1),
+                InstructionDown => new Point(0, 1),
+                _ => throw new ArgumentException($"Invalid instruction: {instruction}")
+            };
 
-                // Check if the beacon is on targetY
-                if (sensorBeaconPair.BeaconPosition.Y == targetY)
+            var destination = position + direction;
+
+            // Destination is free, just move
+            if (map[destination.X, destination.Y] is not (Wall or Box))
+            {
+                position = destination;
+            }
+            // Destination is a box, check if there is a free space further up and move accordingly
+            else if (map[destination.X, destination.Y] is Box)
+            {
+                var pushTarget = destination + direction;
+
+                while (map[pushTarget.X, pushTarget.Y] is Box)
                 {
-                    beaconsOnTargetY.Add(sensorBeaconPair.BeaconPosition.X);
+                    pushTarget += direction;
                 }
-            }
-        }
 
-        // Remove overlapped ranges => inner.Start >= outer.Start && inner.End <= outer.End));
-        ranges.RemoveAll(inner =>
-            ranges.Where(outer => outer != inner).Any(outer => inner.Start >= outer.Start && inner.End <= outer.End));
-
-        // Compute unique number of x columns
-        long totalCovered = 0;
-        for (int i = 0; i < ranges.Count; i++)
-        {
-            var range = ranges[i];
-            var coverRange = range;
-
-            // Add number of covered columns and then subtract common ones
-            for (int j = i + 1; j < ranges.Count; j++)
-            {
-                var exclude = ranges[j];
-
-                coverRange -= exclude;
-            }
-
-            totalCovered += coverRange.Covered;
-        }
-
-        // Remove lines which contains a beacon
-        totalCovered -= beaconsOnTargetY.Count;
-
-        // Print total covered columns on line Y
-        if (display)
-        {
-            AnsiConsole.MarkupLine($"[green]Number of positions that cannot contain a beacon: [yellow]{totalCovered}[/][/]");
-        }
-    }
-
-    public override void RunPart2(bool display = true)
-    {
-        const int xMin = 0;
-        const int xMax = 4_000_000;
-        const int yMin = 0;
-        const int yMax = 4_000_000;
-
-        bool IsOutbound(Point point) => point.X is < xMin or > xMax || point.Y is < yMin or > yMax;
-
-        // Parse pairs
-        var pairs = ParsePairs();
-
-        // Find all points that are just outside a sensor range
-        var possiblePoints = new ConcurrentBag<Point>();
-
-        Parallel.For(0, pairs.Count, i =>
-        {
-            var pair = pairs[i];
-
-            var sensor = pair.SensorPosition;
-            var distance = pair.SensorRange + 1;
-
-            for (int x = -distance; x <= distance; x++)
-            {
-                var y = distance - Math.Abs(x);
-                var positivePoint = new Point(sensor.X + x, sensor.Y + y);
-                var negativePoint = new Point(sensor.X + x, sensor.Y - y);
-
-                // If both points are outbound, just skip
-                var positiveIsOutbound = IsOutbound(positivePoint);
-                var negativeIsOutbound = IsOutbound(negativePoint);
-
-                if (positiveIsOutbound && negativeIsOutbound)
+                // Cannot move anything since there is a wall
+                if (map[pushTarget.X, pushTarget.Y] is Wall)
                 {
                     continue;
                 }
 
-                // Check if this point is just outside at least one other sensor range
-                for (int otherIndex = 0; otherIndex < pairs.Count; otherIndex++)
+                // Move robot and boxes (only need to move first and last box of a chain)
+                position = destination;
+
+                map[destination.X, destination.Y] = Empty;
+                map[pushTarget.X, pushTarget.Y] = Box;
+            }
+            // Else destination is a wall, do nothing
+        }
+
+        var coordinatesSum = 0;
+
+        // Count gps coordinates
+        for (var x = 0; x < Size; x++)
+        {
+            for (var y = 0; y < Size; y++)
+            {
+                if (map[x, y] is Box)
                 {
-                    if (otherIndex == i)
-                    {
-                        continue;
-                    }
+                    coordinatesSum += 100 * y + x;
 
-                    var otherPair = pairs[otherIndex];
-
-                    var otherSensor = otherPair.SensorPosition;
-                    var otherDistance = otherPair.SensorRange + 1;
-
-                    if (!positiveIsOutbound)
-                    {
-                        var distancePositive = Math.Abs(positivePoint.X - otherSensor.X) +
-                                               Math.Abs(positivePoint.Y - otherSensor.Y);
-
-                        if (distancePositive == otherDistance)
-                        {
-                            possiblePoints.Add(positivePoint);
-                        }
-                    }
-
-                    if (!negativeIsOutbound)
-                    {
-                        var distanceNegative = Math.Abs(negativePoint.X - negativePoint.X) +
-                                               Math.Abs(negativePoint.Y - negativePoint.Y);
-
-                        if (distanceNegative == otherDistance)
-                        {
-                            possiblePoints.Add(negativePoint);
-                        }
-                    }
                 }
             }
-        });
-
-        // Keep the only outside detection point
-        var finalPoint = possiblePoints.First(f =>
-            pairs.All(p => Math.Abs(f.X - p.SensorPosition.X) + Math.Abs(f.Y - p.SensorPosition.Y) > p.SensorRange));
-
-        var tuningFrequency = finalPoint.X * (long) 4_000_000 + finalPoint.Y;
+        }
 
         if (display)
         {
-            AnsiConsole.MarkupLine($"[green]Tuning frequency: [yellow]{tuningFrequency}[/][/]");
+            AnsiConsole.MarkupLine($"[green]Sum of boxes GPS coordinates: [yellow]{coordinatesSum}[/][/]");
         }
     }
 
-    private static IList<SensorBeaconPair> ParsePairs()
+    private static void DisplayGrid(char[,] map)
     {
-        var pairs = new List<SensorBeaconPair>();
-
-        foreach (var line in Input.ReadAllLines())
+        for (var y = 0; y < Size; y++)
         {
-            var span = line.AsSpan();
+            for (var x = 0; x < Size; x++)
+            {
+                AnsiConsole.Write(map[x, y]);
+            }
 
-            // Parse sensor position
-            int sensorXStart = span.IndexOf('=') + 1;
-            int sensorXEnd = span.IndexOf(',');
-
-            var sensorX = int.Parse(span[sensorXStart..sensorXEnd]);
-            span = span[sensorXEnd..];
-
-            int sensorYStart = span.IndexOf('=') + 1;
-            int sensorYEnd = span.IndexOf(':');
-
-            var sensorY = int.Parse(span[sensorYStart..sensorYEnd]);
-            span = span[sensorYEnd..];
-
-            // Parse beacon
-            int beaconXStart = span.IndexOf('=') + 1;
-            int beaconXEnd = span.IndexOf(',');
-
-            var beaconX = int.Parse(span[beaconXStart..beaconXEnd]);
-            span = span[beaconXEnd..];
-
-            int beaconYStart = span.IndexOf('=') + 1;
-
-            var beaconY = int.Parse(span[beaconYStart..]);
-
-            pairs.Add(new SensorBeaconPair(new Point(sensorX, sensorY), new Point(beaconX, beaconY)));
+            AnsiConsole.WriteLine();
         }
 
-        return pairs;
+        AnsiConsole.WriteLine();
     }
 
-    #region Input
+    public override void RunPart2(bool display = true)
+    {
 
-    public const string Input =
-    """
-    Sensor at x=1384790, y=3850432: closest beacon is at x=2674241, y=4192888
-    Sensor at x=2825953, y=288046: closest beacon is at x=2154954, y=-342775
-    Sensor at x=3553843, y=2822363: closest beacon is at x=3444765, y=2347460
-    Sensor at x=2495377, y=3130491: closest beacon is at x=2761496, y=2831113
-    Sensor at x=1329263, y=1778185: closest beacon is at x=2729595, y=2000000
-    Sensor at x=2882039, y=2206085: closest beacon is at x=2729595, y=2000000
-    Sensor at x=3903141, y=2510440: closest beacon is at x=4006219, y=3011198
-    Sensor at x=3403454, y=3996578: closest beacon is at x=3754119, y=4475047
-    Sensor at x=3630476, y=1048796: closest beacon is at x=3444765, y=2347460
-    Sensor at x=16252, y=2089672: closest beacon is at x=-276514, y=2995794
-    Sensor at x=428672, y=1150723: closest beacon is at x=-281319, y=668868
-    Sensor at x=2939101, y=3624676: closest beacon is at x=2674241, y=4192888
-    Sensor at x=3166958, y=2890076: closest beacon is at x=2761496, y=2831113
-    Sensor at x=3758241, y=3546895: closest beacon is at x=4006219, y=3011198
-    Sensor at x=218942, y=3011070: closest beacon is at x=-276514, y=2995794
-    Sensor at x=52656, y=3484635: closest beacon is at x=-276514, y=2995794
-    Sensor at x=2057106, y=405314: closest beacon is at x=2154954, y=-342775
-    Sensor at x=1966905, y=2495701: closest beacon is at x=2761496, y=2831113
-    Sensor at x=511976, y=2696731: closest beacon is at x=-276514, y=2995794
-    Sensor at x=3094465, y=2478570: closest beacon is at x=3444765, y=2347460
-    Sensor at x=806671, y=228252: closest beacon is at x=-281319, y=668868
-    Sensor at x=3011731, y=1976307: closest beacon is at x=2729595, y=2000000
-    """;
+    }
 
-    #endregion
+    private (char[,] Map, Point Start, List<char> Instructions) ParseMap()
+    {
+        var readingMap = true;
+
+        var map = new char[Size, Size];
+
+        Point start = default;
+
+        var instructions = new List<char>();
+
+        var y = 0;
+        foreach (var line in Input.AsSpan().EnumerateLines())
+        {
+            if (line.IsWhiteSpace())
+            {
+                readingMap = false;
+
+                continue;
+            }
+
+            if (readingMap)
+            {
+                var x = 0;
+                foreach (var symbol in line)
+                {
+                    map[x, y] = Empty;
+
+                    if (symbol is Wall or Box)
+                    {
+                        map[x, y] = symbol;
+                    }
+                    else if (symbol is '@')
+                    {
+                        start = new Point(x, y);
+                    }
+
+                    x++;
+                }
+
+                y++;
+            }
+            else
+            {
+                foreach (var instruction in line)
+                {
+                    instructions.Add(instruction);
+                }
+            }
+        }
+
+        return (map, start, instructions);
+    }
+
+    private readonly record struct Point(int X, int Y)
+        : IAdditionOperators<Point, Point, Point>,
+            ISubtractionOperators<Point, Point, Point>,
+            IMultiplyOperators<Point, int, Point>
+    {
+        public static Point operator +(Point left, Point right)
+        {
+            return new Point(left.X + right.X, left.Y + right.Y);
+        }
+
+        public static Point operator -(Point left, Point right)
+        {
+            return new Point(left.X - right.X, left.Y - right.Y);
+        }
+
+        public static Point operator *(Point left, int right)
+        {
+            return new Point(left.X * right, left.Y * right);
+        }
+
+        public static Point operator *(int left, Point right)
+        {
+            return new Point(right.X * left, right.Y * left);
+        }
+
+        public static implicit operator Point((int X, int Y) point)
+            => new(point.X, point.Y);
+    }
 }

Days/Day16.cs

@@ -0,0 +1,289 @@
+using System.Numerics;
+using Spectre.Console;
+
+namespace AdventOfCode.Days;
+
+public class Day16 : Day
+{
+    public override int Number => 16;
+    public override string Name => "Reindeer Maze";
+
+    private const int Size = 141;
+
+    private const char Wall = '#';
+    private const char Empty = '.';
+    private const char Start = 'S';
+    private const char End = 'E';
+
+    private static readonly Point DirectionUp = new(0, -1);
+    private static readonly Point DirectionDown = new(0, 1);
+    private static readonly Point DirectionLeft = new(-1, 0);
+    private static readonly Point DirectionRight = new(1, 0);
+
+    public override void RunPart1(bool display = true)
+    {
+        var (maze, start, end) = ParseMaze();
+
+        var visited = new Dictionary<(Point Position, Point Direction), int>();
+
+        var minimumScore = int.MaxValue;
+
+        var toVisit = new Queue<(Point Position, Point Direction, int Score)>();
+
+        toVisit.Enqueue((start, DirectionRight, 0));
+
+        while (toVisit.Count > 0)
+        {
+            var (position, direction, score) = toVisit.Dequeue();
+
+            if (visited.TryGetValue((position, direction), out var savedScore) && savedScore <= score)
+            {
+                continue;
+            }
+
+            visited[(position, direction)] = score;
+
+            // Reached end
+            if (position == end)
+            {
+                if (score < minimumScore)
+                {
+                    minimumScore = score;
+                }
+
+                continue;
+            }
+
+            // Try forward if there is no wall
+            var destination = position + direction;
+
+            if (maze[destination.X, destination.Y] is not Wall)
+            {
+                toVisit.Enqueue((destination, direction, score + 1));
+            }
+
+            // Also try changing direction
+            toVisit.Enqueue((position, NextDirection(direction), score + 1000));
+            toVisit.Enqueue((position, PreviousDirection(direction), score + 1000));
+        }
+
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Lowest score: [yellow]{minimumScore}[/][/]");
+        }
+    }
+
+    public override void RunPart2(bool display = true)
+    {
+        var (maze, start, end) = ParseMaze();
+
+        var visited = new Dictionary<(Point Position, Point Direction), int>();
+
+        var minimumScore = int.MaxValue;
+
+        var toVisit = new Queue<(Point Position, Point Direction, int Score)>();
+
+        toVisit.Enqueue((start, DirectionRight, 0));
+
+        // First we need to find minimum score
+        while (toVisit.Count > 0)
+        {
+            var (position, direction, score) = toVisit.Dequeue();
+
+            if (visited.TryGetValue((position, direction), out var savedScore) && savedScore <= score)
+            {
+                continue;
+            }
+
+            visited[(position, direction)] = score;
+
+            // Reached end
+            if (position == end)
+            {
+                if (score < minimumScore)
+                {
+                    minimumScore = score;
+                }
+
+                continue;
+            }
+
+            // Try forward if there is no wall
+            var destination = position + direction;
+
+            if (maze[destination.X, destination.Y] is not Wall)
+            {
+                toVisit.Enqueue((destination, direction, score + 1));
+            }
+
+            // Also try changing direction
+            toVisit.Enqueue((position, NextDirection(direction), score + 1000));
+            toVisit.Enqueue((position, PreviousDirection(direction), score + 1000));
+        }
+
+        // Now that we have minimum score, we need to find all the paths that lead to this score
+        var toVisitPath = new Stack<(Point Position, Point Direction, int Score, List<Point> Path)>();
+        toVisitPath.Push((start, DirectionRight, 0, []));
+
+        var minimumScorePaths = new List<List<Point>>();
+
+        while (toVisitPath.Count > 0)
+        {
+            var (position, direction, score, path) = toVisitPath.Pop();
+
+            if (score > minimumScore)
+            {
+                continue;
+            }
+
+            if (visited.TryGetValue((position, direction), out var savedScore) && savedScore < score)
+            {
+                continue;
+            }
+
+            path.Add(position);
+
+            // Reached end
+            if (position == end)
+            {
+                minimumScorePaths.Add(path);
+
+                continue;
+            }
+
+            // Try forward if there is no wall
+            var destination = position + direction;
+
+            if (maze[destination.X, destination.Y] is not Wall)
+            {
+                toVisitPath.Push((destination, direction, score + 1, path));
+            }
+
+            // Also try changing direction
+            toVisitPath.Push((position, NextDirection(direction), score + 1000, path.ToList()));
+            toVisitPath.Push((position, PreviousDirection(direction), score + 1000, path.ToList()));
+        }
+
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Unique positions in optimal paths: [yellow]{minimumScorePaths.SelectMany(l => l).ToHashSet().Count}[/][/]");
+        }
+    }
+
+    private (char[,] Maze, Point Start, Point end) ParseMaze()
+    {
+        var maze = new char[Size, Size];
+        Point start = default;
+        Point end = default;
+
+        var y = 0;
+        foreach (var line in Input.AsSpan().EnumerateLines())
+        {
+            var x = 0;
+            foreach (var symbol in line)
+            {
+                if (symbol is Start)
+                {
+                    start = new Point(x, y);
+
+                    maze[x, y] = Empty;
+                }
+                else if (symbol is End)
+                {
+                    end = new Point(x, y);
+
+                    maze[x, y] = Empty;
+                }
+                else
+                {
+                    maze[x, y] = symbol;
+                }
+
+                x++;
+            }
+
+            y++;
+        }
+
+        return (maze, start, end);
+    }
+
+    private static Point NextDirection(Point direction)
+    {
+        if (direction == DirectionUp)
+        {
+            return DirectionRight;
+        }
+
+        if (direction == DirectionRight)
+        {
+            return DirectionDown;
+        }
+
+        if (direction == DirectionDown)
+        {
+            return DirectionLeft;
+        }
+
+        if (direction == DirectionLeft)
+        {
+            return DirectionUp;
+        }
+
+        throw new ArgumentException("Invalid direction", nameof(direction));
+    }
+
+    private static Point PreviousDirection(Point direction)
+    {
+        if (direction == DirectionUp)
+        {
+            return DirectionLeft;
+        }
+
+        if (direction == DirectionLeft)
+        {
+            return DirectionDown;
+        }
+
+        if (direction == DirectionDown)
+        {
+            return DirectionRight;
+        }
+
+        if (direction == DirectionRight)
+        {
+            return DirectionUp;
+        }
+
+        throw new ArgumentException("Invalid direction", nameof(direction));
+    }
+
+    private readonly record struct Point(int X, int Y)
+        : IAdditionOperators<Point, Point, Point>,
+            ISubtractionOperators<Point, Point, Point>,
+            IMultiplyOperators<Point, int, Point>
+    {
+        public static Point operator +(Point left, Point right)
+        {
+            return new Point(left.X + right.X, left.Y + right.Y);
+        }
+
+        public static Point operator -(Point left, Point right)
+        {
+            return new Point(left.X - right.X, left.Y - right.Y);
+        }
+
+        public static Point operator *(Point left, int right)
+        {
+            return new Point(left.X * right, left.Y * right);
+        }
+
+        public static Point operator *(int left, Point right)
+        {
+            return new Point(right.X * left, right.Y * left);
+        }
+
+        public static implicit operator Point((int X, int Y) point)
+            => new(point.X, point.Y);
+    }
+}

Days/Day17.cs

@@ -0,0 +1,247 @@
+using System.Numerics;
+using Spectre.Console;
+
+namespace AdventOfCode.Days;
+
+public class Day17 : Day
+{
+    public override int Number => 17;
+    public override string Name => "Chronospatial Computer";
+
+    public override void RunPart1(bool display = true)
+    {
+        var (registerA, registerB, registerC, program) = ParseState();
+
+        var toOutput = new List<int>();
+        var instructionPointer = 0;
+
+        while (instructionPointer < program.Length)
+        {
+            var opCode = program[instructionPointer];
+
+            var isComboOperand = opCode switch
+            {
+                0 => true,
+                1 => false,
+                2 => true,
+                3 => false,
+                4 => false,
+                5 => true,
+                6 => true,
+                7 => true,
+                _ => throw new ArgumentOutOfRangeException(nameof(opCode))
+            };
+
+            var operand = (isComboOperand, program[instructionPointer + 1]) switch
+            {
+                (false, var literalValue) => literalValue,
+                (true, 0) => 0,
+                (true, 1) => 1,
+                (true, 2) => 2,
+                (true, 3) => 3,
+                (true, 4) => registerA,
+                (true, 5) => registerB,
+                (true, 6) => registerC,
+                _ => throw new ArgumentOutOfRangeException()
+            };
+
+            switch (opCode)
+            {
+                // adv
+                case 0:
+                    registerA = (int)(registerA / Math.Pow(2, operand));
+                    break;
+
+                // bxl
+                case 1:
+                    registerB = registerB ^ operand;
+                    break;
+
+                // bst
+                case 2:
+                    registerB = operand % 8;
+                    break;
+
+                // jnz
+                case 3:
+                    if (registerA is not 0)
+                    {
+                        instructionPointer = operand - 2;
+                    }
+                    break;
+
+                // bxc
+                case 4:
+                    registerB = registerB ^ registerC;
+                    break;
+
+                // out
+                case 5:
+                    toOutput.Add(operand % 8);
+                    break;
+
+                // bdv
+                case 6:
+                    registerB = (int)(registerA / Math.Pow(2, operand));
+                    break;
+
+                // cdv
+                case 7:
+                    registerC = (int)(registerA / Math.Pow(2, operand));
+                    break;
+            }
+
+            instructionPointer += 2;
+        }
+
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Output: [yellow]{string.Join(',', toOutput)}[/][/]");
+        }
+    }
+
+    public override void RunPart2(bool display = true)
+    {
+        var (_, originalRegisterB, originalRegisterC, program) = ParseState();
+        var toOutput = new List<int>();
+        var instructionPointer = 0;
+
+        var finalRegisterA = 0;
+
+        AnsiConsole.Status().Start("Computing (0)...", ctx =>
+        {
+            for (var initialRegisterA = 0; initialRegisterA < int.MaxValue; initialRegisterA++)
+            {
+                // Reset state
+                var registerA = initialRegisterA;
+                var registerB = originalRegisterB;
+                var registerC = originalRegisterC;
+
+                toOutput.Clear();
+                instructionPointer = 0;
+
+                while (instructionPointer < program.Length)
+                {
+                    var opCode = program[instructionPointer];
+
+                    var isComboOperand = opCode switch
+                    {
+                        0 => true,
+                        1 => false,
+                        2 => true,
+                        3 => false,
+                        4 => false,
+                        5 => true,
+                        6 => true,
+                        7 => true,
+                        _ => throw new ArgumentOutOfRangeException(nameof(opCode))
+                    };
+
+                    var operand = (isComboOperand, program[instructionPointer + 1]) switch
+                    {
+                        (false, var literalValue) => literalValue,
+                        (true, 0) => 0,
+                        (true, 1) => 1,
+                        (true, 2) => 2,
+                        (true, 3) => 3,
+                        (true, 4) => registerA,
+                        (true, 5) => registerB,
+                        (true, 6) => registerC,
+                        _ => throw new ArgumentOutOfRangeException()
+                    };
+
+                    switch (opCode)
+                    {
+                        // adv
+                        case 0:
+                            registerA = (int)(registerA / Math.Pow(2, operand));
+                            break;
+
+                        // bxl
+                        case 1:
+                            registerB = registerB ^ operand;
+                            break;
+
+                        // bst
+                        case 2:
+                            registerB = operand % 8;
+                            break;
+
+                        // jnz
+                        case 3:
+                            if (registerA is not 0)
+                            {
+                                instructionPointer = operand - 2;
+                            }
+                            break;
+
+                        // bxc
+                        case 4:
+                            registerB = registerB ^ registerC;
+                            break;
+
+                        // out
+                        case 5:
+                            toOutput.Add(operand % 8);
+                            break;
+
+                        // bdv
+                        case 6:
+                            registerB = (int)(registerA / Math.Pow(2, operand));
+                            break;
+
+                        // cdv
+                        case 7:
+                            registerC = (int)(registerA / Math.Pow(2, operand));
+                            break;
+                    }
+
+                    instructionPointer += 2;
+                }
+
+                if (initialRegisterA % 1000 == 0)
+                {
+                    ctx.Status($"Computing ({initialRegisterA})...");
+                }
+
+                // Check if output is the program itself
+                if (toOutput.SequenceEqual(program))
+                {
+                    finalRegisterA = initialRegisterA;
+
+                    break;
+                }
+            }
+        });
+
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Lowest possible value for register A to output itself: [yellow]{finalRegisterA}[/][/]");
+        }
+    }
+
+    private (int RegisterA, int RegisterN, int RegisterC, int[] Program) ParseState()
+    {
+        var lineIterator = Input.AsSpan().EnumerateLines();
+
+        lineIterator.MoveNext();
+        var registerA = int.Parse(lineIterator.Current[(lineIterator.Current.IndexOf(':') + 2)..]);
+
+        lineIterator.MoveNext();
+        var registerB = int.Parse(lineIterator.Current[(lineIterator.Current.IndexOf(':') + 2)..]);
+
+        lineIterator.MoveNext();
+        var registerC = int.Parse(lineIterator.Current[(lineIterator.Current.IndexOf(':') + 2)..]);
+
+        lineIterator.MoveNext();
+        lineIterator.MoveNext();
+
+        var program = lineIterator.Current[(lineIterator.Current.IndexOf(':') + 2)..]
+            .ToString()
+            .Split(',')
+            .Select(int.Parse)
+            .ToArray();
+
+        return (registerA, registerB, registerC, program);
+    }
+}

Days/Day18.cs

@@ -0,0 +1,204 @@
+using System.Numerics;
+using System.Runtime.Intrinsics.X86;
+using Spectre.Console;
+
+namespace AdventOfCode.Days;
+
+public class Day18 : Day
+{
+    public override int Number => 18;
+    public override string Name => "RAM Run";
+
+    private const int Size = 71;
+
+    private const char Corrupted = '#';
+    private const char Empty = ' ';
+
+    public override void RunPart1(bool display = true)
+    {
+        var grid = ParseGrid(1024);
+
+        var visited = new Dictionary<Point, int>();
+        var toVisit = new Queue<(Point Position, int Score)>();
+
+        var end = new Point(Size - 1, Size - 1);
+
+        var minimumScore = int.MaxValue;
+
+        toVisit.Enqueue((new Point(0, 0), 0));
+
+        while (toVisit.Count > 0)
+        {
+            var (position, score) = toVisit.Dequeue();
+
+            // Cannot go out of bounds
+            if (position is { X: < 0 or >= Size } or { Y: < 0 or >= Size })
+            {
+                continue;
+            }
+
+            // Cannot go onto a corrupted space
+            if (grid[position.X, position.Y] is Corrupted)
+            {
+                continue;
+            }
+
+            if (visited.TryGetValue(position, out var savedScore) && savedScore <= score)
+            {
+                continue;
+            }
+
+            visited[position] = score;
+
+            // End
+            if (position == end)
+            {
+                if (score < minimumScore)
+                {
+                    minimumScore = score;
+                }
+
+                continue;
+            }
+
+            toVisit.Enqueue((position + (1, 0), score + 1));
+            toVisit.Enqueue((position + (-1, 0), score + 1));
+            toVisit.Enqueue((position + (0, 1), score + 1));
+            toVisit.Enqueue((position + (0, -1), score + 1));
+        }
+
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Minimum number of steps to reach the exit: [yellow]{minimumScore}[/][/]");
+        }
+    }
+
+    public override void RunPart2(bool display = true)
+    {
+        (int X, int Y)[] bytesToFall = Input.ReadAllLines()
+            .Select(line => line.Split(','))
+            .Select(split => (int.Parse(split[0]), int.Parse(split[1])))
+            .ToArray();
+
+        var nextByteIndex = 1024;
+        var grid = ParseGrid(1024);
+
+        while (true)
+        {
+            var nextByte = bytesToFall[nextByteIndex];
+
+            grid[nextByte.X, nextByte.Y] = Corrupted;
+
+            if (!IsGridCompletable())
+            {
+                break;
+            }
+
+            nextByteIndex++;
+        }
+
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Grid will be blocked at byte n°{nextByteIndex} at position: [yellow]{bytesToFall[nextByteIndex]}[/][/]");
+        }
+
+        return;
+
+        bool IsGridCompletable()
+        {
+            var visited = new HashSet<Point>();
+            var toVisit = new Queue<Point>();
+
+            var end = new Point(Size - 1, Size - 1);
+
+            toVisit.Enqueue(new Point(0, 0));
+
+            while (toVisit.Count > 0)
+            {
+                var position = toVisit.Dequeue();
+
+                // Cannot go out of bounds
+                if (position is { X: < 0 or >= Size } or { Y: < 0 or >= Size })
+                {
+                    continue;
+                }
+
+                // Cannot go onto a corrupted space
+                if (grid[position.X, position.Y] is Corrupted)
+                {
+                    continue;
+                }
+
+                if (!visited.Add(position))
+                {
+                    continue;
+                }
+
+                // End
+                if (position == end)
+                {
+                    return true;
+                }
+
+                toVisit.Enqueue(position + (1, 0));
+                toVisit.Enqueue(position + (-1, 0));
+                toVisit.Enqueue(position + (0, 1));
+                toVisit.Enqueue(position + (0, -1));
+            }
+
+            return false;
+        }
+    }
+
+    private char[,] ParseGrid(int limit)
+    {
+        var grid = new char[Size, Size];
+
+        var counter = 0;
+        foreach (var line in Input.AsSpan().EnumerateLines())
+        {
+            if (counter >= limit)
+            {
+                break;
+            }
+
+            var x = int.Parse(line[..line.IndexOf(',')]);
+            var y = int.Parse(line[(line.IndexOf(',') + 1)..]);
+
+            grid[x, y] = Corrupted;
+
+            counter++;
+        }
+
+        return grid;
+    }
+
+    private readonly record struct Point(int X, int Y)
+        : IAdditionOperators<Point, Point, Point>,
+            ISubtractionOperators<Point, Point, Point>,
+            IMultiplyOperators<Point, int, Point>
+    {
+        public static Point operator +(Point left, Point right)
+        {
+            return new Point(left.X + right.X, left.Y + right.Y);
+        }
+
+        public static Point operator -(Point left, Point right)
+        {
+            return new Point(left.X - right.X, left.Y - right.Y);
+        }
+
+        public static Point operator *(Point left, int right)
+        {
+            return new Point(left.X * right, left.Y * right);
+        }
+
+        public static Point operator *(int left, Point right)
+        {
+            return new Point(right.X * left, right.Y * left);
+        }
+
+        public static implicit operator Point((int X, int Y) point)
+            => new(point.X, point.Y);
+    }
+}

Days/Day19.cs

@@ -0,0 +1,179 @@
+using System.Collections.Frozen;
+using System.Numerics;
+using System.Runtime.Intrinsics.X86;
+using Spectre.Console;
+
+namespace AdventOfCode.Days;
+
+public class Day19 : Day
+{
+    public override int Number => 19;
+    public override string Name => "Linen Layout";
+
+    public override void RunPart1(bool display = true)
+    {
+        var (towels, patterns) = ParseInput();
+        var impossiblePatterns = new HashSet<string>();
+
+        var possiblePatterns = 0;
+
+        foreach (var pattern in patterns)
+        {
+            // Check if it's possible to make this pattern
+            if (CheckPattern(pattern))
+            {
+                possiblePatterns++;
+            }
+        }
+
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Number of designs that are possible: [yellow]{possiblePatterns}[/][/]");
+        }
+
+        return;
+
+        bool CheckPattern(ReadOnlySpan<char> pattern)
+        {
+            // Console.WriteLine($"Checking '{pattern}'");
+
+            if (pattern.Length is 0)
+            {
+                return true;
+            }
+
+            if (impossiblePatterns.Contains(pattern.ToString()))
+            {
+                return false;
+            }
+
+            var prefix = pattern[0];
+
+            if (!towels.TryGetValue(prefix, out var towelsList))
+            {
+                impossiblePatterns.Add(pattern.ToString());
+
+                return false;
+            }
+
+            foreach (var towel in towelsList)
+            {
+                if (pattern.StartsWith(towel) && CheckPattern(pattern[towel.Length..]))
+                {
+                    return true;
+                }
+            }
+
+            impossiblePatterns.Add(pattern.ToString());
+
+            return false;
+        }
+    }
+
+    public override void RunPart2(bool display = true)
+    {
+        var (towels, patterns) = ParseInput();
+        var impossiblePatterns = new HashSet<string>();
+        var knownPatterns = new Dictionary<string, long>();
+
+        var possibleCombinations = 0L;
+
+        foreach (var pattern in patterns)
+        {
+            // Check if it's possible to make this pattern
+            possibleCombinations += CheckPattern(pattern);
+        }
+
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Number of combinations that are possible: [yellow]{possibleCombinations}[/][/]");
+        }
+
+        return;
+
+        long CheckPattern(ReadOnlySpan<char> pattern)
+        {
+            if (pattern.Length is 0)
+            {
+                return 1;
+            }
+
+            if (impossiblePatterns.Contains(pattern.ToString()))
+            {
+                return 0;
+            }
+
+            if (knownPatterns.TryGetValue(pattern.ToString(), out var count))
+            {
+                return count;
+            }
+
+            var prefix = pattern[0];
+
+            if (!towels.TryGetValue(prefix, out var towelsList))
+            {
+                impossiblePatterns.Add(pattern.ToString());
+
+                return 0;
+            }
+
+            var possibilities = 0L;
+
+            foreach (var towel in towelsList)
+            {
+                if (pattern.StartsWith(towel))
+                {
+                    possibilities += CheckPattern(pattern[towel.Length..]);
+                }
+            }
+
+            if (possibilities is 0)
+            {
+                impossiblePatterns.Add(pattern.ToString());
+            }
+            else
+            {
+                knownPatterns.Add(pattern.ToString(), possibilities);
+            }
+
+            return possibilities;
+        }
+    }
+
+    private (FrozenDictionary<char, List<string>> Towels, List<string> Patterns) ParseInput()
+    {
+        var towels = new Dictionary<char, List<string>>();
+        var patterns = new List<string>();
+
+        foreach (var line in Input.AsSpan().EnumerateLines())
+        {
+            if (towels.Count is 0)
+            {
+                var split = line.Split(", ");
+
+                foreach (var range in split)
+                {
+                    var towel = line[range].Trim();
+
+                    var prefix = towel[0];
+
+                    if (!towels.TryGetValue(prefix, out var towelsList))
+                    {
+                        towelsList = [];
+                        towels[prefix] = towelsList;
+                    }
+
+                    towelsList.Add(towel.ToString());
+                }
+            }
+            else if (!line.IsWhiteSpace())
+            {
+                var pattern = line.Trim();
+
+                patterns.Add(pattern.ToString());
+            }
+        }
+
+        return (towels.ToFrozenDictionary(), patterns);
+    }
+}

Days/Day20.cs

@@ -0,0 +1,288 @@
+using System.Collections.Frozen;
+using System.Numerics;
+using System.Runtime.Intrinsics.X86;
+using Spectre.Console;
+
+namespace AdventOfCode.Days;
+
+public class Day20 : Day
+{
+    public override int Number => 20;
+    public override string Name => "Race Condition";
+
+    private const int Size = 141;
+    private const char Wall = '#';
+    private const char Empty = '.';
+
+    private readonly List<Point> _cheatOffsets =
+    [
+        (2, 0),
+        (1, 1),
+        (0, 2),
+        (-1, 1),
+        (-2, 0),
+        (-1, -1),
+        (0, -2),
+        (1, -1)
+    ];
+
+    public override void RunPart1(bool display = true)
+    {
+        var (map, start, end) = ParseMap();
+
+        // Find track path
+        var trackPath = new List<Point>();
+        var distanceFromStart = new Dictionary<Point, int>();
+
+        var position = start;
+
+        var distance = 0;
+        while (position != end)
+        {
+           trackPath.Add(position);
+           distanceFromStart[position] = distance;
+
+           // Find next track position
+           distance++;
+           var up = position + new Point(0, -1);
+           if (up is { X: >= 0 and < Size, Y: >= 0 and < Size } && map[up.X, up.Y] is not Wall && !distanceFromStart.ContainsKey(up))
+           {
+               position = up;
+
+               continue;
+           }
+
+           var down = position + new Point(0, 1);
+           if (down is { X: >= 0 and < Size, Y: >= 0 and < Size } && map[down.X, down.Y] is not Wall && !distanceFromStart.ContainsKey(down))
+           {
+               position = down;
+
+               continue;
+           }
+
+           var left = position + new Point(-1, 0);
+           if (left is { X: >= 0 and < Size, Y: >= 0 and < Size } && map[left.X, left.Y] is not Wall && !distanceFromStart.ContainsKey(left))
+           {
+               position = left;
+
+               continue;
+           }
+
+           var right = position + new Point(1, 0);
+           if (right is { X: >= 0 and < Size, Y: >= 0 and < Size } && map[right.X, right.Y] is not Wall && !distanceFromStart.ContainsKey(right))
+           {
+               position = right;
+           }
+        }
+
+        // Also add end
+        trackPath.Add(position);
+        distanceFromStart[position] = distance;
+
+        var cheats = new Dictionary<(Point StartPosition, Point EndPosition), int>();
+
+        // Now return to start and try all possible combination of cheats for each track position
+        foreach (var trackPosition in trackPath)
+        {
+            var originDistance = distanceFromStart[trackPosition];
+
+            foreach (var cheatOffset in _cheatOffsets)
+            {
+                var cheatDestination = trackPosition + cheatOffset;
+
+                if (cheatDestination.X is < 0 or >= Size || cheatDestination.Y is < 0 or >= Size)
+                {
+                    continue;
+                }
+
+                if (map[cheatDestination.X, cheatDestination.Y] is Wall)
+                {
+                    continue;
+                }
+
+                var destinationDistance = distanceFromStart[cheatDestination];
+                var savedDistance = destinationDistance - originDistance - 2;
+
+                // Only take into account real shortcuts, not those that do not save time
+                if (savedDistance < 1)
+                {
+                    continue;
+                }
+
+                cheats.Add((trackPosition, cheatDestination), savedDistance);
+            }
+        }
+
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Number of cheats that save at least 100 picoseconds: [yellow]{cheats.Count(c => c.Value >= 100)}[/][/]");
+        }
+    }
+
+    public override void RunPart2(bool display = true)
+    {
+        var (map, start, end) = ParseMap();
+
+        // Find track path
+        var trackPath = new List<Point>();
+        var distanceFromStart = new Dictionary<Point, int>();
+
+        var position = start;
+
+        var distance = 0;
+        while (position != end)
+        {
+           trackPath.Add(position);
+           distanceFromStart[position] = distance;
+
+           // Find next track position
+           distance++;
+           var up = position + new Point(0, -1);
+           if (up is { X: >= 0 and < Size, Y: >= 0 and < Size } && map[up.X, up.Y] is not Wall && !distanceFromStart.ContainsKey(up))
+           {
+               position = up;
+
+               continue;
+           }
+
+           var down = position + new Point(0, 1);
+           if (down is { X: >= 0 and < Size, Y: >= 0 and < Size } && map[down.X, down.Y] is not Wall && !distanceFromStart.ContainsKey(down))
+           {
+               position = down;
+
+               continue;
+           }
+
+           var left = position + new Point(-1, 0);
+           if (left is { X: >= 0 and < Size, Y: >= 0 and < Size } && map[left.X, left.Y] is not Wall && !distanceFromStart.ContainsKey(left))
+           {
+               position = left;
+
+               continue;
+           }
+
+           var right = position + new Point(1, 0);
+           if (right is { X: >= 0 and < Size, Y: >= 0 and < Size } && map[right.X, right.Y] is not Wall && !distanceFromStart.ContainsKey(right))
+           {
+               position = right;
+           }
+        }
+
+        // Also add end
+        trackPath.Add(position);
+        distanceFromStart[position] = distance;
+
+        var cheats = new Dictionary<(Point StartPosition, Point EndPosition), int>();
+
+        // Now return to start and try all possible combination of cheats for each track position
+        foreach (var trackPosition in trackPath)
+        {
+            var originDistance = distanceFromStart[trackPosition];
+
+            foreach (var cheatDestination in trackPath.Where(destination => trackPosition.DistanceTo(destination) <= 20))
+            {
+                var cheatLength = trackPosition.DistanceTo(cheatDestination);
+
+                var destinationDistance = distanceFromStart[cheatDestination];
+                var savedDistance = destinationDistance - originDistance - cheatLength;
+
+                // Only take into account real shortcuts, not those that do not save time
+                if (savedDistance < 1)
+                {
+                    continue;
+                }
+
+                if (cheats.TryGetValue((trackPosition, cheatDestination), out var otherSavedDistance))
+                {
+                    if (savedDistance <= otherSavedDistance)
+                    {
+                        continue;
+                    }
+                }
+
+                cheats[(trackPosition, cheatDestination)] = savedDistance;
+            }
+        }
+
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Number of cheats that save at least 100 picoseconds: [yellow]{cheats.Count(c => c.Value >= 100)}[/][/]");
+        }
+    }
+
+    private (char[,] Map, Point Start, Point End) ParseMap()
+    {
+        var map = new char[Size, Size];
+        Point start = default;
+        Point end = default;
+
+        var y = 0;
+        foreach (var line in Input.AsSpan().EnumerateLines())
+        {
+            var x = 0;
+
+            foreach (var symbol in line)
+            {
+                if (symbol == 'S')
+                {
+                    start = new Point(x, y);
+                }
+                else if (symbol == 'E')
+                {
+                    end = new Point(x, y);
+                }
+
+                if (symbol is Wall)
+                {
+                    map[x, y] = Wall;
+                }
+                else
+                {
+                    map[x, y] = Empty;
+                }
+
+                x++;
+            }
+
+            y++;
+        }
+
+        return (map, start, end);
+    }
+
+    private readonly record struct Point(int X, int Y)
+        : IAdditionOperators<Point, Point, Point>,
+            ISubtractionOperators<Point, Point, Point>,
+            IMultiplyOperators<Point, int, Point>
+    {
+        public static Point operator +(Point left, Point right)
+        {
+            return new Point(left.X + right.X, left.Y + right.Y);
+        }
+
+        public static Point operator -(Point left, Point right)
+        {
+            return new Point(left.X - right.X, left.Y - right.Y);
+        }
+
+        public static Point operator *(Point left, int right)
+        {
+            return new Point(left.X * right, left.Y * right);
+        }
+
+        public static Point operator *(int left, Point right)
+        {
+            return new Point(right.X * left, right.Y * left);
+        }
+
+        public static implicit operator Point((int X, int Y) point)
+            => new(point.X, point.Y);
+
+        public int DistanceTo(Point other)
+        {
+            var distance = other - this;
+
+            return Math.Abs(distance.X) + Math.Abs(distance.Y);
+        }
+    }
+}

Days/Day21.cs

@@ -0,0 +1,183 @@
+using System.Collections.Frozen;
+using System.Numerics;
+using System.Runtime.Intrinsics.X86;
+using System.Text;
+using Spectre.Console;
+
+namespace AdventOfCode.Days;
+
+public class Day21 : Day
+{
+    public override int Number => 21;
+    public override string Name => "Keypad Conundrum";
+
+    private const char Up = '^';
+    private const char Right = '>';
+    private const char Down = 'v';
+    private const char Left = '<';
+    private const char Enter = 'A';
+
+    private readonly Dictionary<char, Point> _numpadPositions = new()
+    {
+        { '7', (0, 0) },
+        { '8', (1, 0) },
+        { '9', (2, 0) },
+        { '4', (0, 1) },
+        { '5', (1, 1) },
+        { '6', (2, 1) },
+        { '1', (0, 2) },
+        { '2', (1, 2) },
+        { '3', (2, 2) },
+        { '0', (1, 3) },
+        { Enter, (2, 3) }
+    };
+
+    private readonly Dictionary<char, Point> _keypadPositions = new()
+    {
+        { Up, (1, 0) },
+        { Enter, (2, 0) },
+        { Left, (0, 1) },
+        { Down, (1, 1) },
+        { Right, (2, 1) }
+    };
+
+    public override void RunPart1(bool display = true)
+    {
+        var codes = ParseCodes();
+        var complexitiesSum = 0;
+
+        foreach (var code in codes)
+        {
+            // Get first keypad sequence
+            var firstKeypadSequence = new StringBuilder();
+            var currentInput = Enter;
+
+            foreach (var digit in code)
+            {
+                firstKeypadSequence.Append(GetNumpadMoveSequence(currentInput, digit));
+
+                currentInput = digit;
+            }
+
+            // Get second keypad sequence
+            var secondKeypadSequence = new StringBuilder();
+            currentInput = Enter;
+
+            foreach (var input in firstKeypadSequence.ToString())
+            {
+                secondKeypadSequence.Append(GetKeypadMoveSequence(currentInput, input));
+
+                currentInput = input;
+            }
+
+            // Get third and last keypad sequence
+            var thirdKeypadSequence = new StringBuilder();
+            currentInput = Enter;
+
+            foreach (var input in secondKeypadSequence.ToString())
+            {
+                thirdKeypadSequence.Append(GetKeypadMoveSequence(currentInput, input));
+
+                currentInput = input;
+            }
+
+            complexitiesSum += thirdKeypadSequence.Length * int.Parse(code.AsSpan()[..^1]);
+        }
+
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Sum of complexities: [yellow]{complexitiesSum}[/][/]");
+        }
+    }
+
+    public override void RunPart2(bool display = true)
+    {
+
+    }
+
+    private string GetNumpadMoveSequence(char origin, char destination)
+    {
+        var originPosition = _numpadPositions[origin];
+        var destinationPosition = _numpadPositions[destination];
+
+        var move = destinationPosition - originPosition;
+
+        var moveRight = move.X > 0;
+        var moveDown = move.Y > 0;
+
+        var sequence = string.Concat(
+            new string(moveRight ? Right : Left, Math.Abs(move.X)),
+            new string(moveDown ? Down : Up, Math.Abs(move.Y)),
+            Enter.ToString() // Always end on Enter to press key
+        );
+
+        return sequence;
+    }
+
+    private string GetKeypadMoveSequence(char origin, char destination)
+    {
+        var originPosition = _keypadPositions[origin];
+        var destinationPosition = _keypadPositions[destination];
+
+        var move = destinationPosition - originPosition;
+
+        var moveRight = move.X > 0;
+        var moveDown = move.Y > 0;
+
+        var sequence = string.Concat(
+            new string(moveDown ? Down : Up, Math.Abs(move.Y)),
+            new string(moveRight ? Right : Left, Math.Abs(move.X)),
+            Enter.ToString() // Always end on Enter to press key
+        );
+
+        return sequence;
+    }
+
+    private List<string> ParseCodes()
+    {
+        var codes = new List<string>();
+
+        foreach (var line in Input.AsSpan().EnumerateLines())
+        {
+            codes.Add(line.ToString());
+        }
+
+        return codes;
+    }
+
+    private readonly record struct Point(int X, int Y)
+        : IAdditionOperators<Point, Point, Point>,
+            ISubtractionOperators<Point, Point, Point>,
+            IMultiplyOperators<Point, int, Point>
+    {
+        public static Point operator +(Point left, Point right)
+        {
+            return new Point(left.X + right.X, left.Y + right.Y);
+        }
+
+        public static Point operator -(Point left, Point right)
+        {
+            return new Point(left.X - right.X, left.Y - right.Y);
+        }
+
+        public static Point operator *(Point left, int right)
+        {
+            return new Point(left.X * right, left.Y * right);
+        }
+
+        public static Point operator *(int left, Point right)
+        {
+            return new Point(right.X * left, right.Y * left);
+        }
+
+        public static implicit operator Point((int X, int Y) point)
+            => new(point.X, point.Y);
+
+        public int DistanceTo(Point other)
+        {
+            var distance = other - this;
+
+            return Math.Abs(distance.X) + Math.Abs(distance.Y);
+        }
+    }
+}

Days/Day22.cs

@@ -0,0 +1,162 @@
+using System.Collections.Frozen;
+using System.Numerics;
+using System.Runtime.Intrinsics.X86;
+using System.Text;
+using Spectre.Console;
+
+namespace AdventOfCode.Days;
+
+public class Day22 : Day
+{
+    public override int Number => 22;
+    public override string Name => "Monkey Market";
+
+    private const int Iterations = 2000;
+    private const int PruneValue = 16777216;
+
+    public override void RunPart1(bool display = true)
+    {
+        var secretsSum = 0L;
+
+        foreach (var line in Input.AsSpan().EnumerateLines())
+        {
+            var secret = long.Parse(line);
+
+            for (var i = 0; i < Iterations; i++)
+            {
+                var result = secret * 64;
+                secret = (secret ^ result) % PruneValue;
+
+                result = secret / 32;
+                secret = (secret ^ result) % PruneValue;
+
+                result = secret * 2048;
+                secret = (secret ^ result) % PruneValue;
+            }
+
+            secretsSum += secret;
+        }
+
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Sum of {Iterations}th secret numbers: [yellow]{secretsSum}[/][/]");
+        }
+    }
+
+    public override void RunPart2(bool display = true)
+    {
+        var maximumBananas = 0L;
+
+        var initialSecrets = Input.ReadAllLines().Select(l => long.Parse(l)).ToArray();
+        var matchSequences = GenerateSequences().ToArray();
+
+        AnsiConsole.Progress().Start(progress =>
+        {
+            var progressTask = progress.AddTask("Finding best sequence", maxValue: matchSequences.Length);
+
+            Parallel.ForEach(matchSequences, matchSequence =>
+            {
+                Span<long> sequence = stackalloc long[4];
+                var currentBananas = 0L;
+
+                for (var initialSecretIndex = 0; initialSecretIndex < initialSecrets.Length; initialSecretIndex++)
+                {
+                    var secret = initialSecrets[initialSecretIndex];
+
+                    for (var i = 0; i < Iterations; i++)
+                    {
+                        var previousSecret = secret;
+
+                        // Compute new secret
+                        var result = secret * 64;
+                        secret = (secret ^ result) % PruneValue;
+
+                        result = secret / 32;
+                        secret = (secret ^ result) % PruneValue;
+
+                        result = secret * 2048;
+                        secret = (secret ^ result) % PruneValue;
+
+                        var lastDigit = secret % 10;
+                        var previousSecretLastDigit = previousSecret % 10;
+
+                        // Update sequence
+                        sequence[0] = sequence[1];
+                        sequence[1] = sequence[2];
+                        sequence[2] = sequence[3];
+                        sequence[3] = lastDigit - previousSecretLastDigit;
+
+                        // Check if sequence match
+                        if (sequence[0] == matchSequence.Item1
+                            && sequence[1] == matchSequence.Item2
+                            && sequence[2] == matchSequence.Item3
+                            && sequence[3] == matchSequence.Item4
+                            && i >= 3)
+                        {
+                            currentBananas += lastDigit;
+
+                            // Go to next monkey
+                            break;
+                        }
+                    }
+
+                    // Stop early if it's not possible to beat current maximum
+                    if (maximumBananas - currentBananas >= ((initialSecrets.Length - initialSecretIndex - 1) * 9))
+                    {
+                        break;
+                    }
+                }
+
+                ExchangeIfGreaterThan(ref maximumBananas, currentBananas);
+
+                progressTask.Increment(1);
+            });
+        });
+
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Maximum amount of bananas: [yellow]{maximumBananas}[/][/]");
+        }
+
+        return;
+
+        IEnumerable<(long, long, long, long)> GenerateSequences()
+        {
+            for (var a = -9L; a <= 9; a++)
+            {
+                for (var b = -9L; b <= 9; b++)
+                {
+                    for (var c = -9L; c <= 9; c++)
+                    {
+                        for (var d = -9L; d <= 9; d++)
+                        {
+                            yield return (a, b, c, d);
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    // Source: https://stackoverflow.com/a/13323172
+    private static void ExchangeIfGreaterThan(ref long location, long value)
+    {
+        // Read
+        var current = Interlocked.Read(ref location);
+
+        // Compare
+        while (current < value)
+        {
+            // Set
+            var previous = Interlocked.CompareExchange(ref location, value, current);
+
+            // If another thread has set a greater value, we can break
+            // or if previous value is current value, then no other thread has it changed in between
+            if (previous == current || previous >= value) // note: most common case first
+                break;
+
+            // For all other cases, we need another run (read value, compare, set)
+            current = Interlocked.Read(ref location);
+        }
+    }
+}

Days/Day23.cs

@@ -0,0 +1,172 @@
+using System.Collections.Frozen;
+using System.Numerics;
+using System.Runtime.Intrinsics.X86;
+using System.Text;
+using Spectre.Console;
+
+namespace AdventOfCode.Days;
+
+public class Day23 : Day
+{
+    public override int Number => 23;
+    public override string Name => "LAN Party";
+
+    public override void RunPart1(bool display = true)
+    {
+        var computerLinks = new Dictionary<string, HashSet<string>>();
+
+        // Parse all links
+        foreach (var line in Input.AsSpan().EnumerateLines())
+        {
+            var firstComputer = line[..2].ToString();
+            var secondComputer = line[3..].ToString();
+
+            if (!computerLinks.TryGetValue(firstComputer, out var firstLinks))
+            {
+                firstLinks = [];
+                computerLinks[firstComputer] = firstLinks;
+            }
+            firstLinks.Add(secondComputer);
+
+            if (!computerLinks.TryGetValue(secondComputer, out var secondLinks))
+            {
+                secondLinks = [];
+                computerLinks[secondComputer] = secondLinks;
+            }
+            secondLinks.Add(firstComputer);
+        }
+
+        var sets = new HashSet<ComputerSet>();
+
+        foreach (var (firstComputer, firstLinks) in computerLinks)
+        {
+            foreach (var secondComputer in firstLinks)
+            {
+                var thirdComputers = computerLinks[secondComputer].Intersect(firstLinks);
+
+                foreach (var thirdComputer in thirdComputers)
+                {
+                    sets.Add(new ComputerSet(firstComputer, secondComputer, thirdComputer));
+                }
+            }
+        }
+
+        var finalCount = sets.Count(set => set.First.StartsWith('t') || set.Second.StartsWith('t') || set.Third.StartsWith('t'));
+
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Amount of sets that contain at least one computer that starts with t: [yellow]{finalCount}[/][/]");
+        }
+    }
+
+    public override void RunPart2(bool display = true)
+    {
+        var computerLinks = new Dictionary<string, HashSet<string>>();
+
+        // Parse all links
+        foreach (var line in Input.AsSpan().EnumerateLines())
+        {
+            var firstComputer = line[..2].ToString();
+            var secondComputer = line[3..].ToString();
+
+            if (!computerLinks.TryGetValue(firstComputer, out var firstLinks))
+            {
+                firstLinks = [];
+                computerLinks[firstComputer] = firstLinks;
+            }
+            firstLinks.Add(secondComputer);
+
+            if (!computerLinks.TryGetValue(secondComputer, out var secondLinks))
+            {
+                secondLinks = [];
+                computerLinks[secondComputer] = secondLinks;
+            }
+            secondLinks.Add(firstComputer);
+        }
+
+        List<string> largestSet = [];
+
+        AnsiConsole.Status().Start("Starting check...", status =>
+        {
+            var size = 4;
+            while (true)
+            {
+                var ended = true;
+
+                status.Status($"Checking set size: {size}");
+
+                var i = 0;
+                foreach (var (firstComputer, firstLinks) in computerLinks)
+                {
+                    status.Status($"Checking set size: {size} ({i++}/{computerLinks.Count})");
+
+                    if (GenerateLargestSet(firstLinks, size, [ firstComputer ]) is { } largest)
+                    {
+                        largestSet = largest;
+                        size++;
+                        ended = false;
+
+                        break;
+                    }
+                }
+
+                if (ended)
+                {
+                    break;
+                }
+            }
+        });
+
+        var password = string.Join(',', largestSet.Order());
+
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Password to enter lan party: [yellow]{password}[/][/]");
+        }
+
+        return;
+
+        List<string>? GenerateLargestSet(HashSet<string> set, int targetSize, List<string> selected)
+        {
+            if (selected.Count == targetSize)
+            {
+                return selected;
+            }
+
+            if (set.Count is 0 || (set.Count < (targetSize - selected.Count)))
+            {
+                return null;
+            }
+
+            // Next depth
+            foreach (var computer in set)
+            {
+                var nextSet = set.Intersect(computerLinks[computer]).ToHashSet();
+                var nextSelected = selected.Append(computer).ToList();
+
+                if (GenerateLargestSet(nextSet, targetSize, nextSelected) is { } largest)
+                {
+                    return largest;
+                }
+            }
+
+            return null;
+        }
+    }
+
+    private record ComputerSet(string First, string Second, string Third) : IEquatable<ComputerSet>
+    {
+        public virtual bool Equals(ComputerSet? other)
+        {
+            return other is not null &&
+                   (First == other.First || First == other.Second || First == other.Third) &&
+                   (Second == other.First || Second == other.Second || Second == other.Third) &&
+                   (Third == other.First || Third == other.Second || Third == other.Third);
+        }
+
+        public override int GetHashCode()
+        {
+            return First.GetHashCode() * Second.GetHashCode() * Third.GetHashCode();
+        }
+    }
+}

Days/Day24.cs

@@ -0,0 +1,370 @@
+using System.Collections.Frozen;
+using System.Numerics;
+using System.Runtime.CompilerServices;
+using System.Runtime.Intrinsics.X86;
+using System.Text;
+using Microsoft.CodeAnalysis;
+using Microsoft.VisualBasic;
+using Spectre.Console;
+
+namespace AdventOfCode.Days;
+
+public class Day24 : Day
+{
+    public override int Number => 24;
+    public override string Name => "Crossed Wires";
+
+    public override void RunPart1(bool display = true)
+    {
+        var (signals, gates, zGates) = ParseInput();
+
+        while (zGates.Count > 0)
+        {
+            foreach (var (inputLeft, inputRight, output, logicOperator) in gates)
+            {
+                if (!signals.TryGetValue(inputLeft, out var inputLeftValue) ||
+                    !signals.TryGetValue(inputRight, out var inputRightValue))
+                {
+                    continue;
+                }
+
+                signals[output] = Compute(inputLeftValue, inputRightValue, logicOperator);
+
+                if (output.StartsWith('z'))
+                {
+                    zGates.Remove(output);
+                }
+            }
+        }
+
+        var zOutputValue = signals
+            .Where(s => s.Key.StartsWith('z'))
+            .Select(s => new { Index = int.Parse(s.Key[1..]), Value = (long)s.Value })
+            .Sum(s => s.Value << s.Index);
+
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Value output on z signal: [yellow]{zOutputValue}[/][/]");
+        }
+    }
+
+    public override void RunPart2(bool display = true)
+    {
+        var (initialSignals, initialGates, initialZGates) = ParseInput();
+
+        var xInputValue = initialSignals
+            .Where(s => s.Key.StartsWith('x'))
+            .Select(s => new { Index = int.Parse(s.Key[1..]), Value = (long)s.Value })
+            .Sum(s => s.Value << s.Index);
+
+        var yInputValue = initialSignals
+            .Where(s => s.Key.StartsWith('y'))
+            .Select(s => new { Index = int.Parse(s.Key[1..]), Value = (long)s.Value })
+            .Sum(s => s.Value << s.Index);
+
+        // Find wires that need to be changed
+        const long initialZValue = 58740594706150L;
+        var targetZValue = xInputValue + yInputValue;
+
+        var difference = targetZValue ^ initialZValue;
+        var possibleChange = new HashSet<string>();
+
+        for (var i = 0; i < sizeof(long) * 8; i++)
+        {
+            if (((1 << i) & difference) != 0)
+            {
+                possibleChange.Add($"z{i:D2}");
+            }
+        }
+
+        // Find all dependencies
+        int initialSize;
+        do
+        {
+            initialSize = possibleChange.Count;
+
+            foreach (var gate in initialGates)
+            {
+                if (possibleChange.Contains(gate.Output))
+                {
+                    possibleChange.Add(gate.InputLeft);
+                    possibleChange.Add(gate.InputRight);
+                }
+            }
+        } while (possibleChange.Count != initialSize);
+
+        var gatesToSwapIndices = initialGates
+            .Index()
+            .ToList()
+            .Where(t => possibleChange.Contains(t.Item.Output))
+            .Select(t => t.Index)
+            .ToList();
+
+        // Try out all possible permutations of concerned outputs
+        List<string> changedOutputs = [];
+
+        for (var a = 0; a < gatesToSwapIndices.Count - 7; a++)
+        {
+            for (var b = a + 1; b < gatesToSwapIndices.Count - 6; b++)
+            {
+                for (var c = b + 1; c < gatesToSwapIndices.Count - 5; c++)
+                {
+                    for (var d = c + 1; d < gatesToSwapIndices.Count - 4; d++)
+                    {
+                        for (var e = d + 1; e < gatesToSwapIndices.Count - 3; e++)
+                        {
+                            for (var f = e + 1; f < gatesToSwapIndices.Count - 2; f++)
+                            {
+                                for (var g = f + 1; g < gatesToSwapIndices.Count - 1; g++)
+                                {
+                                    for (var h = g + 1; h < gatesToSwapIndices.Count; h++)
+                                    {
+                                        Console.WriteLine($"h: {h}");
+
+                                        ForAllPermutation([
+                                            gatesToSwapIndices[a],
+                                            gatesToSwapIndices[b],
+                                            gatesToSwapIndices[c],
+                                            gatesToSwapIndices[d],
+                                            gatesToSwapIndices[e],
+                                            gatesToSwapIndices[f],
+                                            gatesToSwapIndices[g],
+                                            gatesToSwapIndices[h]], permutations =>
+                                        {
+                                            if (CheckPermutations(permutations) is { } modifiedOutputs)
+                                            {
+                                                changedOutputs = modifiedOutputs;
+
+                                                return true;
+                                            }
+
+                                            return false;
+                                        });
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        var swappedOutputs = string.Join(',', changedOutputs.Order());
+
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Swapped outputs: [yellow]{swappedOutputs}[/][/]");
+        }
+
+        return;
+
+        List<string>? CheckPermutations(int[] permutations)
+        {
+            var gates = initialGates.ToArray();
+            var zGates = initialZGates.ToHashSet();
+            var signals = initialSignals.ToDictionary();
+
+            SwapOutput(ref gates[permutations[0]], ref gates[permutations[1]]);
+            SwapOutput(ref gates[permutations[2]], ref gates[permutations[3]]);
+            SwapOutput(ref gates[permutations[4]], ref gates[permutations[5]]);
+            SwapOutput(ref gates[permutations[6]], ref gates[permutations[7]]);
+
+            var zOutputValue = 0L;
+            while (zGates.Count > 0)
+            {
+                // Avoid locks when result is not reachable (infinite loop)
+                var resultsCount = signals.Count;
+
+                foreach (var (inputLeft, inputRight, output, logicOperator) in gates)
+                {
+                    if (signals.ContainsKey(output))
+                    {
+                        continue;
+                    }
+
+                    if (!signals.TryGetValue(inputLeft, out var inputLeftValue) ||
+                        !signals.TryGetValue(inputRight, out var inputRightValue))
+                    {
+                        continue;
+                    }
+
+                    var computed = Compute(inputLeftValue, inputRightValue, logicOperator);
+                    signals[output] = computed;
+
+                    if (output.StartsWith('z'))
+                    {
+                        zGates.Remove(output);
+
+                        zOutputValue += (long)computed << int.Parse(output[1..]);
+                    }
+                }
+
+                // No new signal value computed, it's an infinite loop
+                if (signals.Count == resultsCount)
+                {
+                    return null;
+                }
+            }
+
+            if (xInputValue + yInputValue == zOutputValue)
+            {
+                return permutations.Select(i => gates[i].Output).ToList();
+            }
+
+            return null;
+        }
+
+        void SwapOutput(ref LogicGate first, ref LogicGate second)
+        {
+            var temp = first.Output;
+
+            first = first with { Output = second.Output };
+            second = second with { Output = temp };
+        }
+    }
+
+    private int Compute(int inputLeftValue, int inputRightValue, Operator logicOperator) => logicOperator switch
+    {
+        Operator.And => inputLeftValue & inputRightValue,
+        Operator.Or => inputLeftValue | inputRightValue,
+        Operator.Xor => inputLeftValue ^ inputRightValue,
+        _ => throw new ArgumentOutOfRangeException(nameof(logicOperator), logicOperator, null)
+    };
+
+    private (Dictionary<string, int> Signals, List<LogicGate> Gates, HashSet<string> ZGates) ParseInput()
+    {
+        var readingSignals = true;
+
+        var signals = new Dictionary<string, int>();
+        var gates = new List<LogicGate>();
+        var zGates = new HashSet<string>();
+
+        foreach (var line in Input.AsSpan().EnumerateLines())
+        {
+            if (line.IsWhiteSpace())
+            {
+                readingSignals = false;
+
+                continue;
+            }
+
+            if (readingSignals)
+            {
+                var signalName = line[..line.IndexOf(':')];
+                var signalValue = int.Parse(line[(line.IndexOf(':') + 2)..]);
+
+                signals[signalName.ToString()] = signalValue;
+            }
+            else
+            {
+                var split = line.Split(' ');
+                split.MoveNext();
+
+                var inputLeft = line[split.Current];
+                split.MoveNext();
+
+                var logicOperator = Enum.Parse<Operator>(line[split.Current], true);
+                split.MoveNext();
+
+                var inputRight = line[split.Current];
+                split.MoveNext();
+                split.MoveNext();
+
+                var output = line[split.Current];
+
+                gates.Add(new LogicGate(inputLeft.ToString(), inputRight.ToString(), output.ToString(), logicOperator));
+
+                if (output.StartsWith('z'))
+                {
+                    zGates.Add(output.ToString());
+                }
+            }
+        }
+
+        return (signals, gates, zGates);
+    }
+
+    private record LogicGate(string InputLeft, string InputRight, string Output, Operator LogicOperator);
+
+    private enum Operator
+    {
+        And,
+        Or,
+        Xor
+    }
+
+    // Source: https://stackoverflow.com/a/36634935
+
+    /// <summary>
+    /// Heap's algorithm to find all permutations. Non recursive, more efficient.
+    /// </summary>
+    /// <param name="items">Items to permute in each possible ways</param>
+    /// <param name="funcExecuteAndTellIfShouldStop"></param>
+    /// <returns>Return true if cancelled</returns>
+    private static bool ForAllPermutation<T>(T[] items, Func<T[], bool> funcExecuteAndTellIfShouldStop)
+    {
+        int countOfItem = items.Length;
+
+        if (countOfItem <= 1)
+        {
+            return funcExecuteAndTellIfShouldStop(items);
+        }
+
+        var indexes = new int[countOfItem];
+
+        // Unnecessary. Thanks to NetManage for the advise
+        // for (int i = 0; i < countOfItem; i++)
+        // {
+        //     indexes[i] = 0;
+        // }
+
+        if (funcExecuteAndTellIfShouldStop(items))
+        {
+            return true;
+        }
+
+        for (int i = 1; i < countOfItem;)
+        {
+            if (indexes[i] < i)
+            {
+                // On the web there is an implementation with a multiplication which should be less efficient.
+                if ((i & 1) == 1) // if (i % 2 == 1)  ... more efficient ??? At least the same.
+                {
+                    Swap(ref items[i], ref items[indexes[i]]);
+                }
+                else
+                {
+                    Swap(ref items[i], ref items[0]);
+                }
+
+                if (funcExecuteAndTellIfShouldStop(items))
+                {
+                    return true;
+                }
+
+                indexes[i]++;
+                i = 1;
+            }
+            else
+            {
+                indexes[i++] = 0;
+            }
+        }
+
+        return false;
+    }
+
+    /// <summary>
+    /// Swap 2 elements of same type
+    /// </summary>
+    /// <typeparam name="T"></typeparam>
+    /// <param name="a"></param>
+    /// <param name="b"></param>
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    private static void Swap<T>(ref T a, ref T b)
+    {
+        T temp = a;
+        a = b;
+        b = temp;
+    }
+}

Days/Day25.cs

@@ -0,0 +1,111 @@
+using System.Collections.Frozen;
+using System.Numerics;
+using System.Runtime.CompilerServices;
+using System.Runtime.Intrinsics.X86;
+using System.Text;
+using Microsoft.CodeAnalysis;
+using Microsoft.VisualBasic;
+using Spectre.Console;
+
+namespace AdventOfCode.Days;
+
+public class Day25 : Day
+{
+    public override int Number => 25;
+    public override string Name => "Code Chronicle";
+
+    public override void RunPart1(bool display = true)
+    {
+        var (locks, keys) = ParseInput();
+
+        var workingPairs = 0;
+
+        foreach (var lockToTest in locks)
+        {
+            foreach (var key in keys)
+            {
+                if (lockToTest.Height1 + key.Height1 < 6 &&
+                    lockToTest.Height2 + key.Height2 < 6 &&
+                    lockToTest.Height3 + key.Height3 < 6 &&
+                    lockToTest.Height4 + key.Height4 < 6 &&
+                    lockToTest.Height5 + key.Height5 < 6)
+                {
+                    workingPairs++;
+                }
+            }
+        }
+
+        if (display)
+        {
+            AnsiConsole.MarkupLine($"[green]Amont of unique key/lock pairs that fit: [yellow]{workingPairs}[/][/]");
+        }
+    }
+
+    public override void RunPart2(bool display = true)
+    {
+
+    }
+
+    private (List<Lock> Locks, List<Key> Keys) ParseInput()
+    {
+        var locks = new List<Lock>();
+        var keys = new List<Key>();
+
+        Span<int> itemHeights = stackalloc int[5];
+
+        var input = Input.AsSpan();
+        foreach (var itemRange in input.Split($"{Environment.NewLine}{Environment.NewLine}"))
+        {
+            var item = input[itemRange];
+            var lines = item.EnumerateLines();
+
+            var isKey = false;
+
+            // Reset item heights
+            itemHeights[0] = -1;
+            itemHeights[1] = -1;
+            itemHeights[2] = -1;
+            itemHeights[3] = -1;
+            itemHeights[4] = -1;
+
+            for (var height = 0; height <= 6; height++)
+            {
+                lines.MoveNext();
+                var line = lines.Current;
+
+                if (height is 0)
+                {
+                    isKey = line is ".....";
+
+                    continue;
+                }
+
+                for (var i = 0; i < 5; i++)
+                {
+                    if (isKey && line[i] is '#' && itemHeights[i] is -1)
+                    {
+                        itemHeights[i] = 6 - height;
+                    }
+                    else if (!isKey && line[i] is '.' && itemHeights[i] is -1)
+                    {
+                        itemHeights[i] = height - 1;
+                    }
+                }
+            }
+
+            if (isKey)
+            {
+                keys.Add(new Key(itemHeights[0], itemHeights[1], itemHeights[2], itemHeights[3], itemHeights[4]));
+            }
+            else
+            {
+                locks.Add(new Lock(itemHeights[0], itemHeights[1], itemHeights[2], itemHeights[3], itemHeights[4]));
+            }
+        }
+
+        return (locks, keys);
+    }
+
+    private readonly record struct Lock(int Height1, int Height2, int Height3, int Height4, int Height5);
+    private readonly record struct Key(int Height1, int Height2, int Height3, int Height4, int Height5);
+}

Days/Day3.cs

@@ -5,365 +5,105 @@ namespace AdventOfCode.Days;
 public class Day3 : Day
 {
     public override int Number => 3;
-    public override string Name => "Rucksack Reorganization";
+    public override string Name => "Mull It Over";
 
     public override void RunPart1(bool display = true)
     {
-        long sum = 0;
+        var result = 0;
 
-        foreach (var line in Input.ReadAllLines())
+        var input = Input.AsSpan();
+        var mulStart = input.IndexOf("mul(");
+
+        while (mulStart != -1)
         {
-            var middle = line.Length / 2;
-            var firstCompartment = line[..middle];
-            var secondCompartment = line[middle..];
+            input = input[(mulStart + 4)..];
 
-            var common = firstCompartment.Intersect(secondCompartment).First();
+            // Start of a mul operation, search the ending parenthesis and make sure it's before the next mul
+            var mulEnd = input.IndexOf(")");
+            var nextMulStart = input.IndexOf("mul(");
 
-            sum += CharToPriority(common);
+            if (mulEnd != -1 && (nextMulStart == -1 || mulEnd < nextMulStart))
+            {
+                var operands = input[..mulEnd];
+                var separator = operands.IndexOf(",");
+
+                if (separator != -1
+                    && int.TryParse(operands[..separator], out var left)
+                    && int.TryParse(operands[(separator + 1)..], out var right))
+                {
+                    result += left * right;
+                }
+            }
+
+            mulStart = nextMulStart;
         }
 
         if (display)
         {
-            AnsiConsole.MarkupLine($"[green]Sum of priorities is: [yellow]{sum}[/][/]");
+            AnsiConsole.MarkupLine($"[green]Result: [yellow]{result}[/][/]");
         }
     }
 
     public override void RunPart2(bool display = true)
     {
-        long sum = 0;
+        var result = 0;
 
-        foreach (var group in Input.ReadAllLines().Chunk(3))
+        var input = Input.AsSpan();
+        var mulStart = input.IndexOf("mul(");
+
+        while (mulStart != -1)
         {
-            var firstBag = group[0];
-            var secondBag = group[1];
-            var thirdBag = group[2];
+            // Check if there is a "don't()" before next mul
+            var dontStart = input.IndexOf("don't()");
 
-            var common = firstBag.Intersect(secondBag).Intersect(thirdBag).First();
+            if (dontStart < mulStart)
+            {
+                // Search for next "do()"
+                input = input[(dontStart + 7)..];
 
-            sum += CharToPriority(common);
+                var doStart = input.IndexOf("do()");
+
+                if (doStart == -1)
+                {
+                    break;
+                }
+
+                input = input[(doStart + 4)..];
+
+                // Update next mult position
+                mulStart = input.IndexOf("mul(");
+
+                if (mulStart == -1)
+                {
+                    break;
+                }
+            }
+
+            input = input[(mulStart + 4)..];
+
+            // Start of a mul operation, search the ending parenthesis and make sure it's before the next mul
+            var mulEnd = input.IndexOf(")");
+            var nextMulStart = input.IndexOf("mul(");
+
+            if (mulEnd != -1 && (nextMulStart == -1 || mulEnd < nextMulStart))
+            {
+                var operands = input[..mulEnd];
+                var separator = operands.IndexOf(",");
+
+                if (separator != -1
+                    && int.TryParse(operands[..separator], out var left)
+                    && int.TryParse(operands[(separator + 1)..], out var right))
+                {
+                    result += left * right;
+                }
+            }
+
+            mulStart = nextMulStart;
         }
 
         if (display)
         {
-            AnsiConsole.MarkupLine($"[green]Sum of priorities is: [yellow]{sum}[/][/]");
+            AnsiConsole.MarkupLine($"[green]Result: [yellow]{result}[/][/]");
         }
     }
-
-    private static int CharToPriority(char c)
-    {
-        if (char.IsLower(c))
-        {
-            return c - 'a' + 1;
-        }
-
-        return c - 'A' + 27;
-    }
-
-    #region Input
-
-    public const string Input =
-    """
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-    rNJMNNbrHrtjHLHjvwtg
-    fNbNzZdrZnMnMPnQShFPDmnqFm
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-    hZMDbQhMhlMDJrDrPMJRRqGJSvFvSwFSVdvGvwSFqq
-    HjjzcRTnpGVSGGFWHH
-    pssmjctLzpsRRnhlQbPfPrgDbZls
-    FJMhPhnTMGmBFdnmlrfqfCcwlwCwCv
-    pjHLsLbjjRHsHsjDjVsgDRjzCnfCfzqrqvwgflcvcvvgqz
-    njtpHZnLLQGhTtTWSSSh
-    NMddMTDrrjNnrnMWMrlnPwNwftBtGvptGjBHgBgpfCCSfgvf
-    mqRqLFZRVFbtgBSCbGWWHp
-    LZZRmQhVLLFzZdTQPndPNTTnQW
-    CprQrcpqhHhpppchpphdcdpLMRMGsVGGsMsLbZbtbfMRmtbG
-    DzlgTjwPTlSSSCDSlggNmMRtbsstsMfbwtVssMmt
-    TNCNSBNJJTNPJjCTBDzjlJrvvcQrrhphWBqHhHdqrnrr
-    ScbcbglMPRSmvclTlzMTdhVHhhjfdsdhrVDzfjrD
-    LJGtpQwpQBBCttJLGqtqGHhPfDdHwjjhrVrhdrdshr
-    WCpZQCGqtqQWtQWplZPcvMmgmvPccbvT
-    tGWqthqGVdzBWwdd
-    BZvZHFFHZrHZvZNRRHHZNHrMMTzRMTdTzbgDVMVssTDTwg
-    JnNmrHHNrCGBPPnGGc
-    wvFvZBmppBdSLcvshcLrgl
-    bTQqJJHJzJjDQjQtzRVJztDHslgNNVLcgSrsSsWrSslWgrgL
-    TqHHjQnbHTbbmZBBcFMpmBwn
-    ZFCqSlCPdCRTLWWTQQLLQS
-    GjggHcvsggHVTVBLnlcpBQ
-    hvGhlrtjmjrHHhjsMPFNPdtqMPqqRfCf
-    cgRwVfVzrgqqwZctTztFMFMTCdPmmF
-    bWJsSJHpTDRDTWMC
-    sHHNbshnlJhJjBsjsbnBHbZcqrZZQwqvvZcrwwvRcZnr
-    ttgVBtMbttngmHJVpzlzZlppzw
-    cPcsRPmPPQfGcccRQSSZzzvzlflzZHvJppzJzT
-    sQPSCPPWccWWWqsQqRCQFNRMmnbnjjNbgDdBjhBrdbdDbd
-    gSsZDSgdQZgWSgddwLDLLfCDBqvlhBlClqtqjhvBhB
-    RMcsVMcsbVsrPrmJcPHHVvfjjCnvvfCqhlqvqqqq
-    NFMRRpHPgzszGppG
-    WmmZZNJCgCBZCzPvmBCmjWjjqFtFqjFjbVwqwjtt
-    ppDMpdMfSfSSNtlwqbqwwq
-    dTGDhdnfLMLhfDDpQvZNZgmrmrQJgrLQ
-    jrqRqfNNhrVvcTVdpTscpd
-    tGWBlLggWGddTspZZd
-    JJzWtQgQsDbBgDWsgbFrPrRJNMJMPqMNfHjH
-    GdvVbbWsWdvWGDvWZcbFBTBZCzCjwzrhPBJjzF
-    nQPfSHnglfpnMSngnMgJTprJCCwwrwCwpTpCFj
-    SQQHSttRqggmlVsNcvWdRvbWPN
-    WLNLCWLsSJgHFrSHrM
-    gDbzRTcmbzPPgPPdtBctfHfrMMQfGFJrhQnMfGJR
-    dmmzzqZdDqqTLLwjgZgNljws
-    TCqsDHssmDsDGVGlVcMccGDV
-    FLntWWnnFzFgzzbtbznLBtlfjGZmcfFGVNFGlVZcMNlN
-    PpbLLmpgbRzqpCHwChQqwh
-    lVBPVgflgBVVrVTTwgwBPmgflDQjnnGvqjGDDFjGlGnvqHHJ
-    ScCLzdCZdbLSbFdFqvDDdGMQGQ
-    bchNCLRWSbzCbNRzbWRmsrhQwVVwBhmQpPwpgV
-    GmfHCCPqWqHLWLCfRJpbrrbQphwZbZ
-    STVDQzNnzMzNdstMDzzNtZwFhrlwVJJrJlFFJRFwFR
-    DzSvzstnszMnjQcqggjPqQBcqq
-    BzNwLTqwTjrBrljWpBlrQpBpsCGGCtpssCMttDtHsttMDCHp
-    mnrJVmRhhvJVcHtsGHMCnZCPZM
-    bvSmVbRhbgmmSJflzNLrzqzfWfqBWr
-    qsZLqqFNhfrGnJFv
-    DVjVmWlcjVjdDTDlbbTDTzmrCnMmJGnHnmCHfJGfvnfM
-    lVRdDglTlTgVlVjbWWVzVjvNZqSBsLZNtqRsLBqLqQtL
-    ffRRfLVHZHfJHVJcMrMZZwwTzGBBzBTBjGTwrwdSCj
-    qmWbWQbqnbvWhbQPGnGNnpvwSzltpBldtSdzllptCSjTTt
-    vWsbnbWnNvQQQQvsRRLfJRRVGfDcfV
-    PpqrvswPvvvPsNqmDLDttCCcHHZVrCtW
-    hgSddBhghQMdbhbwhgSdQgCCctZcDtLntLttCVLtSLCc
-    dGzdQMFzQMdgGGlGJMzBgBwRqNNfmmTsvfRfJTpwjmpP
-    pcphpdrWDmTgHWMtRWqHRVVH
-    SbGcGGQnvNQGvsjBtVHBLjvqVPVB
-    lzbQCzbZllSzQslpCJpJJDggcggfDT
-    ffrTlhrVrfCsDVTsWzGBBZcBRBqRBWtGtZcq
-    QNFmFHrHNSSmSLJdJrNGZLbGjbcBjBGjqcbgjc
-    ddQvPnHddnQJHSHSFPdnFfDDTfDMMCrwMlPTwDCsrC
-    NBnrNHQHBscvhfBM
-    bbGtgWWWqZFmnZGZbmVCdMzvvShfzfGcdcfMSS
-    WqbjnmbnjWgmFFgtWVbWZwNTNLjNprNwQLDwrTrHQr
-    lwwlcjlzQRBcBccbdLCVnNVWJJzfLndd
-    pZDMtZpSDMZpMZMsPtHVNJVfRCRddVndnJLSJd
-    mDTZvTqtDDHttRPcqhQlwgGlghbqBh
-    DTspTqssqTbdmCMwVmnmlfCD
-    PLPWjjrSjvPzqZvjvRqjLtPwnnHCmWVcncMnnwmncHcHll
-    RFztFjjqjQFQTbdTbQ
-    hTFSVSdhMMVMFjjgbthcbzczcg
-    DvwCJVJWWJDRnfmbDmccfmmgfb
-    QrJvPGWWnpVMqdZsZpqM
-    gRLcHbgnfpgpJjlqqp
-    SFwrTHFBqlZtBPZq
-    HTzDwmSvCvCmsmmvTSwvFwcfRRNRLcQRWNssNNbRWLWL
-    PpMgDMDnsWSnjBQnrjbn
-    LFcVVGChCFdhdVFZVpVCdVbvQbRrbvBBbBjQSJZrrJrR
-    FNwGNCCFHcVTHcFdHHHTDzMzfsgzwpPWMmPflmtt
-    """;
-
-    #endregion
 }

Days/Day5.cs

@@ -5,592 +5,117 @@ namespace AdventOfCode.Days;
 public class Day5 : Day
 {
     public override int Number => 5;
-    public override string Name => "Supply Stacks";
-
-    private IDictionary<int, Stack<char>>? _stacks;
+    public override string Name => "Print Queue";
 
     public override void RunPart1(bool display = true)
     {
-        _stacks = InitStacks();
+        var result = 0;
 
-        foreach (var line in Input.ReadAllLines())
+        var precedences = new HashSet<int>?[100];
+
+        var readingPrecedences = true;
+        foreach (var line in Input.AsSpan().EnumerateLines())
         {
-            var split = line.Split(' ');
-            var moveCount = int.Parse(split[1]);
-            var fromStack = _stacks[int.Parse(split[3])];
-            var toStack = _stacks[int.Parse(split[5])];
-
-            for (int i = 0; i < moveCount; i++)
+            if (line.IsWhiteSpace())
             {
-                toStack.Push(fromStack.Pop());
+                readingPrecedences = false;
+
+                continue;
+            }
+
+            if (readingPrecedences)
+            {
+                var split = line.Split('|');
+                split.MoveNext();
+
+                var ruleTarget = int.Parse(line[split.Current]);
+
+                split.MoveNext();
+
+                var ruleNumber = int.Parse(line[split.Current]);
+
+                if (precedences[ruleTarget] is not { } precedenceSet)
+                {
+                    precedenceSet = [ ruleNumber ];
+                    precedences[ruleTarget] = precedenceSet;
+                }
+                else
+                {
+                    precedenceSet.Add(ruleNumber);
+                }
+            }
+            else
+            {
+                result += CheckLine(line);
             }
         }
 
         if (display)
         {
-            for (int i = 1; i <= 9; i++)
+            AnsiConsole.MarkupLine($"[green]Sum of middle page numbers: [yellow]{result}[/][/]");
+        }
+
+        return;
+
+        int CheckLine(ReadOnlySpan<char> line)
+        {
+            Span<int> positions = stackalloc int[100];
+
+            // Read line to get positions
+            var position = 1;
+            foreach (var range in line.Split(','))
             {
-                AnsiConsole.Markup($"[{(i % 2 == 0 ? "yellow" : "green")}]{_stacks[i].Pop()}[/]");
+                var number = int.Parse(line[range]);
+
+                positions[number] = position;
+
+                position++;
             }
-            AnsiConsole.WriteLine();
+
+            var middlePosition = (position - 1) / 2;
+            var middleNumber = 0;
+
+            var index = 0;
+            // Check if positions respect precedence rules
+            foreach (var range in line.Split(','))
+            {
+                var number = int.Parse(line[range]);
+
+                // Fetch middle number
+                if (index == middlePosition)
+                {
+                    middleNumber = number;
+                }
+                index++;
+
+                if (precedences[number] is not { } precedenceSet)
+                {
+                    continue;
+                }
+
+                var numberPosition = positions[number];
+
+                // Check all precedence rules for numbers in the list
+                foreach (var nextNumber in precedenceSet)
+                {
+                    var nextNumberPosition = positions[nextNumber];
+
+                    if (nextNumberPosition != 0 && numberPosition >= nextNumberPosition)
+                    {
+                        return 0;
+                    }
+                }
+            }
+
+            return middleNumber;
         }
     }
 
     public override void RunPart2(bool display = true)
     {
-        _stacks = InitStacks();
-
-        foreach (var line in Input.ReadAllLines())
-        {
-            var split = line.Split(' ');
-            var moveCount = int.Parse(split[1]);
-            var fromStack = _stacks[int.Parse(split[3])];
-            var toStack = _stacks[int.Parse(split[5])];
-
-            // Push items in reverse order and remove them from the other stack
-            var items = fromStack.Take(moveCount).Reverse().ToArray();
-            foreach (var item in items)
-            {
-                toStack.Push(item);
-                fromStack.Pop();
-            }
-        }
-
-        if (display)
-        {
-            for (int i = 1; i <= 9; i++)
-            {
-                AnsiConsole.Markup($"[{(i % 2 == 0 ? "yellow" : "green")}]{_stacks[i].Pop()}[/]");
-            }
-            AnsiConsole.WriteLine();
-        }
+        // if (display)
+        // {
+        //     AnsiConsole.MarkupLine($"[green]Number of safe reports: [yellow]{xmasCount}[/][/]");
+        // }
     }
-
-    #region Input
-
-    private static IDictionary<int, Stack<char>> InitStacks()
-    {
-        var stacks = new Dictionary<int, Stack<char>>
-        {
-            [1] = new("SLFZDBRH".Reverse()),
-            [2] = new("RZMBT".Reverse()),
-            [3] = new("SNHCLZ".Reverse()),
-            [4] = new("JFCS".Reverse()),
-            [5] = new("BZRWHGP".Reverse()),
-            [6] = new("TMNDGZJV".Reverse()),
-            [7] = new("QPSFWNLG".Reverse()),
-            [8] = new("RZM".Reverse()),
-            [9] = new("TRVGLCM".Reverse())
-        };
-
-        return stacks;
-    }
-
-    public const string Input =
-    """
-    move 6 from 1 to 7
-    move 2 from 2 to 4
-    move 2 from 7 to 4
-    move 6 from 4 to 3
-    move 1 from 5 to 1
-    move 3 from 8 to 3
-    move 15 from 3 to 4
-    move 6 from 5 to 9
-    move 14 from 4 to 2
-    move 3 from 2 to 7
-    move 1 from 2 to 7
-    move 9 from 9 to 1
-    move 3 from 2 to 1
-    move 7 from 6 to 7
-    move 1 from 6 to 8
-    move 2 from 9 to 1
-    move 9 from 2 to 3
-    move 8 from 3 to 9
-    move 1 from 1 to 4
-    move 1 from 8 to 6
-    move 1 from 6 to 2
-    move 5 from 9 to 8
-    move 2 from 9 to 1
-    move 1 from 4 to 2
-    move 17 from 1 to 9
-    move 1 from 3 to 1
-    move 3 from 2 to 3
-    move 2 from 4 to 5
-    move 12 from 7 to 3
-    move 16 from 9 to 2
-    move 5 from 7 to 5
-    move 2 from 1 to 2
-    move 1 from 3 to 6
-    move 1 from 4 to 6
-    move 1 from 7 to 3
-    move 1 from 6 to 3
-    move 7 from 3 to 4
-    move 5 from 8 to 3
-    move 1 from 6 to 7
-    move 7 from 3 to 4
-    move 6 from 3 to 1
-    move 2 from 4 to 8
-    move 1 from 5 to 2
-    move 10 from 4 to 5
-    move 3 from 5 to 2
-    move 2 from 8 to 9
-    move 5 from 2 to 8
-    move 1 from 3 to 5
-    move 2 from 5 to 8
-    move 12 from 5 to 7
-    move 1 from 4 to 2
-    move 5 from 9 to 4
-    move 1 from 2 to 5
-    move 6 from 1 to 3
-    move 6 from 3 to 5
-    move 10 from 7 to 4
-    move 2 from 7 to 3
-    move 4 from 7 to 6
-    move 1 from 9 to 5
-    move 12 from 2 to 1
-    move 1 from 8 to 7
-    move 3 from 7 to 4
-    move 4 from 4 to 8
-    move 7 from 5 to 3
-    move 1 from 2 to 4
-    move 10 from 1 to 5
-    move 2 from 1 to 2
-    move 4 from 6 to 7
-    move 8 from 8 to 3
-    move 5 from 4 to 9
-    move 12 from 3 to 8
-    move 4 from 3 to 8
-    move 2 from 9 to 2
-    move 3 from 5 to 4
-    move 1 from 3 to 5
-    move 1 from 7 to 6
-    move 14 from 4 to 6
-    move 6 from 5 to 9
-    move 8 from 2 to 8
-    move 3 from 5 to 7
-    move 21 from 8 to 4
-    move 16 from 4 to 9
-    move 8 from 6 to 2
-    move 4 from 6 to 1
-    move 1 from 4 to 6
-    move 2 from 4 to 8
-    move 3 from 1 to 8
-    move 2 from 4 to 6
-    move 1 from 6 to 2
-    move 3 from 8 to 4
-    move 2 from 2 to 5
-    move 2 from 5 to 7
-    move 1 from 8 to 9
-    move 1 from 4 to 9
-    move 1 from 1 to 6
-    move 3 from 6 to 3
-    move 3 from 2 to 3
-    move 1 from 4 to 6
-    move 3 from 6 to 7
-    move 10 from 9 to 7
-    move 1 from 4 to 7
-    move 6 from 8 to 3
-    move 1 from 6 to 8
-    move 2 from 2 to 5
-    move 1 from 2 to 1
-    move 1 from 8 to 9
-    move 1 from 2 to 8
-    move 1 from 1 to 9
-    move 7 from 9 to 1
-    move 1 from 8 to 5
-    move 7 from 1 to 7
-    move 3 from 5 to 8
-    move 3 from 7 to 2
-    move 1 from 8 to 4
-    move 1 from 2 to 4
-    move 2 from 4 to 6
-    move 5 from 3 to 1
-    move 9 from 7 to 2
-    move 6 from 3 to 8
-    move 8 from 2 to 7
-    move 2 from 6 to 4
-    move 2 from 1 to 7
-    move 2 from 1 to 4
-    move 24 from 7 to 4
-    move 4 from 8 to 9
-    move 2 from 7 to 5
-    move 1 from 5 to 2
-    move 1 from 3 to 8
-    move 4 from 2 to 8
-    move 13 from 9 to 2
-    move 2 from 8 to 6
-    move 3 from 9 to 6
-    move 26 from 4 to 2
-    move 1 from 5 to 7
-    move 2 from 6 to 2
-    move 2 from 4 to 1
-    move 7 from 2 to 1
-    move 15 from 2 to 6
-    move 8 from 2 to 8
-    move 4 from 6 to 8
-    move 9 from 2 to 9
-    move 13 from 6 to 7
-    move 6 from 1 to 9
-    move 2 from 2 to 4
-    move 4 from 1 to 6
-    move 3 from 8 to 3
-    move 1 from 4 to 9
-    move 2 from 6 to 7
-    move 1 from 4 to 3
-    move 3 from 3 to 2
-    move 14 from 7 to 4
-    move 5 from 9 to 5
-    move 9 from 8 to 5
-    move 7 from 9 to 6
-    move 2 from 5 to 6
-    move 2 from 9 to 2
-    move 10 from 5 to 1
-    move 1 from 3 to 1
-    move 2 from 8 to 1
-    move 1 from 9 to 2
-    move 1 from 7 to 5
-    move 4 from 2 to 1
-    move 1 from 9 to 8
-    move 3 from 4 to 1
-    move 1 from 8 to 6
-    move 12 from 1 to 5
-    move 1 from 1 to 6
-    move 1 from 7 to 5
-    move 4 from 6 to 9
-    move 2 from 2 to 4
-    move 1 from 9 to 6
-    move 1 from 1 to 5
-    move 2 from 9 to 7
-    move 10 from 6 to 5
-    move 1 from 6 to 7
-    move 20 from 5 to 1
-    move 1 from 7 to 9
-    move 2 from 9 to 1
-    move 3 from 5 to 1
-    move 2 from 8 to 4
-    move 2 from 8 to 7
-    move 1 from 5 to 9
-    move 1 from 8 to 4
-    move 22 from 1 to 7
-    move 5 from 4 to 8
-    move 1 from 5 to 9
-    move 19 from 7 to 4
-    move 2 from 9 to 1
-    move 1 from 5 to 9
-    move 10 from 1 to 8
-    move 1 from 9 to 1
-    move 1 from 8 to 3
-    move 8 from 4 to 7
-    move 1 from 5 to 6
-    move 3 from 4 to 5
-    move 1 from 5 to 9
-    move 11 from 7 to 4
-    move 4 from 4 to 9
-    move 1 from 6 to 2
-    move 1 from 3 to 9
-    move 5 from 9 to 4
-    move 5 from 7 to 9
-    move 23 from 4 to 2
-    move 17 from 2 to 7
-    move 2 from 2 to 8
-    move 4 from 4 to 7
-    move 1 from 4 to 5
-    move 2 from 5 to 2
-    move 5 from 8 to 9
-    move 5 from 2 to 7
-    move 9 from 7 to 5
-    move 11 from 9 to 2
-    move 1 from 4 to 3
-    move 5 from 8 to 7
-    move 3 from 8 to 5
-    move 2 from 1 to 3
-    move 2 from 3 to 9
-    move 1 from 5 to 8
-    move 5 from 7 to 5
-    move 15 from 5 to 4
-    move 2 from 8 to 1
-    move 2 from 5 to 1
-    move 4 from 4 to 1
-    move 1 from 8 to 7
-    move 8 from 2 to 1
-    move 4 from 2 to 8
-    move 2 from 7 to 4
-    move 5 from 8 to 6
-    move 5 from 7 to 9
-    move 4 from 6 to 5
-    move 7 from 4 to 8
-    move 1 from 6 to 1
-    move 1 from 3 to 1
-    move 2 from 5 to 1
-    move 7 from 1 to 5
-    move 5 from 1 to 3
-    move 4 from 7 to 9
-    move 4 from 3 to 9
-    move 2 from 9 to 7
-    move 6 from 9 to 2
-    move 1 from 4 to 1
-    move 1 from 3 to 5
-    move 1 from 2 to 5
-    move 5 from 9 to 4
-    move 4 from 4 to 6
-    move 1 from 8 to 9
-    move 8 from 4 to 3
-    move 7 from 7 to 3
-    move 5 from 1 to 3
-    move 11 from 5 to 9
-    move 1 from 7 to 6
-    move 2 from 3 to 5
-    move 1 from 3 to 1
-    move 3 from 6 to 2
-    move 2 from 5 to 1
-    move 2 from 1 to 2
-    move 3 from 1 to 5
-    move 5 from 9 to 2
-    move 2 from 6 to 8
-    move 2 from 3 to 8
-    move 4 from 9 to 7
-    move 3 from 5 to 2
-    move 2 from 1 to 8
-    move 1 from 9 to 8
-    move 1 from 9 to 2
-    move 4 from 7 to 9
-    move 11 from 8 to 7
-    move 1 from 8 to 2
-    move 6 from 9 to 7
-    move 3 from 7 to 1
-    move 13 from 2 to 7
-    move 24 from 7 to 1
-    move 2 from 2 to 6
-    move 1 from 8 to 3
-    move 1 from 9 to 3
-    move 5 from 2 to 4
-    move 1 from 2 to 5
-    move 1 from 6 to 2
-    move 1 from 6 to 3
-    move 1 from 2 to 4
-    move 3 from 7 to 3
-    move 2 from 1 to 7
-    move 2 from 3 to 8
-    move 2 from 7 to 8
-    move 9 from 3 to 2
-    move 3 from 4 to 8
-    move 1 from 5 to 1
-    move 9 from 2 to 1
-    move 3 from 4 to 9
-    move 1 from 7 to 8
-    move 6 from 3 to 9
-    move 2 from 1 to 5
-    move 15 from 1 to 3
-    move 13 from 3 to 9
-    move 11 from 1 to 4
-    move 5 from 4 to 1
-    move 6 from 3 to 6
-    move 4 from 4 to 8
-    move 6 from 1 to 4
-    move 1 from 5 to 2
-    move 1 from 2 to 1
-    move 3 from 4 to 2
-    move 2 from 8 to 5
-    move 2 from 4 to 2
-    move 9 from 9 to 3
-    move 9 from 3 to 5
-    move 2 from 9 to 4
-    move 5 from 2 to 6
-    move 1 from 1 to 8
-    move 1 from 4 to 1
-    move 10 from 9 to 2
-    move 9 from 2 to 4
-    move 10 from 4 to 1
-    move 3 from 1 to 3
-    move 4 from 1 to 2
-    move 5 from 2 to 4
-    move 2 from 5 to 2
-    move 4 from 1 to 7
-    move 10 from 5 to 4
-    move 2 from 2 to 4
-    move 1 from 9 to 2
-    move 2 from 3 to 5
-    move 1 from 3 to 5
-    move 3 from 6 to 7
-    move 8 from 4 to 9
-    move 6 from 6 to 1
-    move 4 from 9 to 5
-    move 2 from 9 to 1
-    move 1 from 2 to 6
-    move 6 from 5 to 2
-    move 3 from 7 to 9
-    move 4 from 8 to 2
-    move 1 from 7 to 9
-    move 1 from 5 to 3
-    move 2 from 7 to 4
-    move 1 from 7 to 1
-    move 14 from 1 to 9
-    move 1 from 1 to 9
-    move 1 from 3 to 8
-    move 3 from 2 to 5
-    move 2 from 4 to 2
-    move 6 from 8 to 1
-    move 1 from 2 to 1
-    move 5 from 1 to 9
-    move 1 from 1 to 7
-    move 2 from 8 to 5
-    move 1 from 5 to 4
-    move 1 from 6 to 1
-    move 8 from 2 to 7
-    move 2 from 6 to 1
-    move 9 from 9 to 5
-    move 11 from 4 to 8
-    move 4 from 7 to 4
-    move 6 from 4 to 6
-    move 1 from 7 to 4
-    move 6 from 6 to 7
-    move 1 from 5 to 9
-    move 6 from 8 to 9
-    move 8 from 9 to 5
-    move 1 from 4 to 5
-    move 15 from 9 to 3
-    move 3 from 1 to 4
-    move 6 from 7 to 2
-    move 3 from 4 to 9
-    move 2 from 7 to 3
-    move 1 from 7 to 3
-    move 1 from 7 to 2
-    move 2 from 8 to 1
-    move 3 from 8 to 5
-    move 2 from 1 to 7
-    move 8 from 3 to 6
-    move 3 from 6 to 5
-    move 1 from 6 to 1
-    move 10 from 5 to 7
-    move 6 from 5 to 4
-    move 4 from 2 to 4
-    move 6 from 5 to 1
-    move 6 from 1 to 8
-    move 2 from 9 to 2
-    move 2 from 9 to 7
-    move 6 from 3 to 7
-    move 1 from 3 to 5
-    move 1 from 1 to 9
-    move 2 from 8 to 1
-    move 2 from 5 to 4
-    move 3 from 3 to 7
-    move 10 from 4 to 6
-    move 1 from 9 to 7
-    move 12 from 7 to 3
-    move 12 from 3 to 8
-    move 2 from 1 to 5
-    move 1 from 1 to 3
-    move 13 from 8 to 1
-    move 7 from 7 to 1
-    move 13 from 6 to 9
-    move 1 from 7 to 4
-    move 6 from 5 to 3
-    move 3 from 4 to 3
-    move 6 from 3 to 1
-    move 10 from 9 to 4
-    move 2 from 7 to 6
-    move 8 from 1 to 9
-    move 3 from 2 to 9
-    move 1 from 3 to 5
-    move 1 from 3 to 5
-    move 1 from 1 to 4
-    move 6 from 9 to 3
-    move 2 from 6 to 7
-    move 4 from 9 to 5
-    move 4 from 1 to 6
-    move 1 from 2 to 4
-    move 6 from 1 to 4
-    move 3 from 9 to 3
-    move 3 from 6 to 8
-    move 3 from 8 to 7
-    move 5 from 5 to 1
-    move 1 from 3 to 9
-    move 1 from 9 to 5
-    move 1 from 3 to 2
-    move 2 from 5 to 1
-    move 1 from 6 to 9
-    move 1 from 6 to 3
-    move 2 from 9 to 7
-    move 2 from 8 to 1
-    move 1 from 3 to 2
-    move 1 from 2 to 5
-    move 1 from 7 to 1
-    move 7 from 7 to 9
-    move 12 from 1 to 9
-    move 1 from 5 to 2
-    move 1 from 7 to 1
-    move 13 from 4 to 7
-    move 1 from 9 to 4
-    move 5 from 7 to 3
-    move 4 from 9 to 1
-    move 8 from 7 to 9
-    move 3 from 2 to 3
-    move 4 from 3 to 7
-    move 5 from 4 to 6
-    move 3 from 9 to 4
-    move 10 from 1 to 5
-    move 3 from 4 to 7
-    move 16 from 9 to 2
-    move 3 from 9 to 2
-    move 6 from 5 to 3
-    move 4 from 6 to 2
-    move 1 from 4 to 6
-    move 2 from 6 to 8
-    move 1 from 5 to 2
-    move 1 from 5 to 8
-    move 7 from 7 to 2
-    move 16 from 2 to 1
-    move 1 from 5 to 1
-    move 10 from 2 to 8
-    move 14 from 8 to 5
-    move 2 from 2 to 6
-    move 1 from 2 to 5
-    move 2 from 2 to 1
-    move 8 from 1 to 7
-    move 4 from 1 to 7
-    move 2 from 1 to 7
-    move 5 from 3 to 2
-    move 1 from 1 to 6
-    move 2 from 2 to 5
-    move 4 from 1 to 7
-    move 1 from 2 to 8
-    move 1 from 2 to 8
-    move 3 from 6 to 7
-    move 10 from 7 to 5
-    move 1 from 2 to 8
-    move 27 from 5 to 9
-    move 1 from 5 to 6
-    move 1 from 6 to 4
-    move 1 from 4 to 3
-    move 3 from 3 to 7
-    move 4 from 3 to 6
-    move 2 from 6 to 4
-    move 3 from 8 to 1
-    move 2 from 6 to 1
-    move 12 from 7 to 8
-    move 2 from 3 to 9
-    move 1 from 9 to 2
-    move 1 from 2 to 8
-    move 2 from 1 to 2
-    move 6 from 3 to 8
-    move 1 from 7 to 4
-    move 15 from 9 to 5
-    move 7 from 9 to 4
-    move 1 from 2 to 1
-    move 16 from 8 to 2
-    move 8 from 5 to 2
-    move 24 from 2 to 9
-    move 3 from 1 to 2
-    move 24 from 9 to 1
-    move 5 from 5 to 9
-    move 3 from 4 to 1
-    move 1 from 7 to 6
-    move 1 from 6 to 3
-    move 1 from 3 to 2
-    move 3 from 2 to 3
-    move 1 from 5 to 6
-    move 1 from 2 to 7
-    """;
-
-    #endregion
 }

Days/Day6.cs

@@ -1,3 +1,4 @@
+using System.Numerics;
 using Spectre.Console;
 
 namespace AdventOfCode.Days;
@@ -5,75 +6,189 @@ namespace AdventOfCode.Days;
 public class Day6 : Day
 {
     public override int Number => 6;
-    public override string Name => "Tuning Trouble";
+    public override string Name => "Guard Gallivant";
+
+    private const int GridSize = 130;
+
+    private static readonly Point DirectionUp = new(0, -1);
+    private static readonly Point DirectionDown = new(0, 1);
+    private static readonly Point DirectionLeft = new(-1, 0);
+    private static readonly Point DirectionRight = new(1, 0);
+
     public override void RunPart1(bool display = true)
     {
-        int position = 0;
+        HashSet<Point> visited = [];
+        var direction = DirectionUp;
 
-        // Store the last 4 characters in a stream (kind of like a sliding window)
-        var charStream = new Queue<char>();
-        charStream.Enqueue(Input[0]);
-        charStream.Enqueue(Input[1]);
-        charStream.Enqueue(Input[2]);
+        var (obstaclesGrid, position) = ReadInputGrid();
 
-        for (int i = 3; i < Input.Length; i++)
+        visited.Add(position);
+
+        // Move the guard till it leaves the grid
+        while (true)
         {
-            charStream.Enqueue(Input[i]);
+            var destination = position + direction;
 
-            // Check if all 4 chars are different
-            if (charStream.ToHashSet().Count == charStream.Count)
+            if (destination.X is < 0 or >= GridSize ||
+                destination.Y is < 0 or >= GridSize)
             {
-                position = i + 1;
                 break;
             }
 
-            charStream.Dequeue();
+            // Check if it's possible to move or if there is an obstacle
+            if (obstaclesGrid[destination.X, destination.Y])
+            {
+                direction = NextDirection(direction);
+
+                continue;
+            }
+
+            position = destination;
+
+            visited.Add(position);
         }
 
         if (display)
         {
-            AnsiConsole.MarkupLine($"[green]Position of start-of-packet marker is: [yellow]{position}[/][/]");
+            AnsiConsole.MarkupLine($"[green]Amount of distinct positions: [yellow]{visited.Count}[/][/]");
         }
     }
 
     public override void RunPart2(bool display = true)
     {
-        const int length = 14;
-        int position = 0;
+        var possibleLoops = 0;
+        var (initialGrid, startPosition) = ReadInputGrid();
 
-        // Store the last 14 characters in a stream (kind of like a sliding window)
-        var charStream = new Queue<char>();
-        for (int i = 0; i < length - 1; i++)
+        for (var y = 0; y < GridSize; y++)
         {
-            charStream.Enqueue(Input[i]);
-        }
-
-        for (int i = length - 1; i < Input.Length; i++)
-        {
-            charStream.Enqueue(Input[i]);
-
-            // Check if all 14 chars are different
-            if (charStream.ToHashSet().Count == charStream.Count)
+            for (var x = 0; x < GridSize; x++)
             {
-                position = i + 1;
-                break;
-            }
+                // Store obstacle state
+                var initialState = initialGrid[x, y];
 
-            charStream.Dequeue();
+                // Check if grid is a loop after adding an obstacle there
+                initialGrid[x, y] = true;
+
+                if (IsLoop(initialGrid, startPosition))
+                {
+                    possibleLoops++;
+                }
+
+                // Restore obstacle state
+                initialGrid[x, y] = initialState;
+            }
         }
 
         if (display)
         {
-            AnsiConsole.MarkupLine($"[green]Position of start-of-message marker is: [yellow]{position}[/][/]");
+            AnsiConsole.MarkupLine($"[green]Amount of possible loop positions: [yellow]{possibleLoops}[/][/]");
+        }
+
+        return;
+
+        bool IsLoop(bool[,] obstaclesGrid, Point position)
+        {
+            HashSet<(Point position, Point direction)> visited = [];
+            var direction = DirectionUp;
+
+            visited.Add((position, direction));
+
+            // Move the guard till it loops or leaves the grid
+            while (true)
+            {
+                var destination = position + direction;
+
+                if (visited.Contains((destination, direction)))
+                {
+                    return true;
+                }
+
+                if (destination.X is < 0 or >= GridSize || destination.Y is < 0 or >= GridSize)
+                {
+                    return false;
+                }
+
+                // Check if it's possible to move or if there is an obstacle
+                if (obstaclesGrid[destination.X, destination.Y])
+                {
+                    direction = NextDirection(direction);
+
+                    continue;
+                }
+
+                position = destination;
+
+                visited.Add((position, direction));
+            }
         }
     }
 
-    #region Input
+    private (bool[,] ObstaclesGrid, Point Start) ReadInputGrid()
+    {
+        var grid = new bool[GridSize, GridSize];
+        Point start = default;
 
-    public const string Input =
-    """
-    rgffbnnqvqhhmtmzzmmpmllcggsdswwvvwzzpptbppgngsnncwcnwcwnwgwrwrrnqnlqlccwggrcgrccjgcgwghgffjgjgrgmmsrrhchfcfdccjwwzdzcdcbcjjtfjjltlvvtstvttszsvsmmfccwcjwwzmzhhjvjpvjpppcwppdtdvtdvtvztzvzffdfqqgbgffrgrpgphhbcctssncsnncfcppvnpvnvfnfvnnfggtpplggwsggldllzvzrznncbbjpplbbrrnsrssmrsrhhmqmnqqhpqqnrqnrrtrnnrwrwhhpjhphlhvvgbgzztqtvvmssdshhqnhnjjvhjhqqbrqrrmrlrdllvrlvlccfvcffhfssgvsswhwqqfwfwhhcffjmmjrrbgrgjgrrvsrvvwmwsmmszzvmzvmmwmtthvvfbfllpjpwpwjpwpnpjpqqwtqtwwqpwqqrsqqcpqqssrgsrrjwwqmwmgwgrggmvmgmfgmffjfhjfjttcztccmtmmccnznhhcgcffmnfmmqjjhwwtccbzbhhwnhnsnmsnmnqqchhhnggbzbjzjzszsfsjfjvffnlffvrvddbhhqccdnnzwnznjnpnmppthhqddjhddqjqlqplqqjpjwppqttswsvwvfwflfplffnbfbwfwhhlhtlhtltzzmlmslmlwwgzwzrrwhhlnnrfnnmpppjpgpbbhpbhppbrppbhhzgzczqcqvqggwppcnnhnznvznzhhcpctptpjtppdhhprhrcrpcprpplrprzrnrfnrnlrlvrrfqqnnsqsqrssnrnvvvghvvbzzqppjsjnnrprwrrmqqtfqfwwrdrsddprddbdzbdbndbdjdljjrtjrrnzrzjrzzpssftfmfbflbbcpcsppwrppntnhthlthtbbsmsbmsmggpssnhnjjtsjjwssdjdwwppcbpcclmccwzzrggmgmnnwjnnqppjttvllmhhvcctptbpbdpdhdqqgggbnnqcchlhssltstllvqlvqvdvjdvvqvsvfvhfhlfftqffztzdttfvvzmvzznvnsnjjvqjvjljplpvvzlzhzghgddbbzbmbnztgthrnpsqhhdvprtpdftmqfvgjzgdvqwmvgwbczvbschqfhdvqcfnmbgmtqmlmsqcbfhshrzzbrtpgnwwtzgnjghzrlwhntprqhvshjcfvlnchccbtnswfnmpccdppqrqrhngvlwrpplbnpgzbzwtzwrsptmsmlndcfmbnqgvnqvzwpvrtfsrwfvfwdvplrfdddwcnwhzchmwfjsfvbtbrjchmgqwfvvmpzhqcbzhrcmjrzmgrtnzrcqdqdqnpwjctlhrjcphbbcvhvqnhtwjrvrbzfzfzzplshvrcchvtgtjcnhlzsttwdhcmdvrdlgsngvtzqsjrcptwwbgvfbsvgnmfhmvgqtfzbhhmdznjlsghhnlwzhvplfvlqzbrsjhdvrshjbnfqgpscbpzmnmmcsdbtwbwmsvfjwdvtctslcqfssrhczdptlrjbfzjctqrcbppcfcbqqzhhftdjchtscwgwcnpvrrjvnnwrqtrqmbgdfcpqhddnvdnmlmqcgsndwbcfvfrzsrflsnqrpmszqrdlshlcsfrmnsqmtrvjwqcllftscwrtmvcjsmrlqvdfjzgfdtswqzldqgjvhczpqrfbclnbwcjprjncvhgfmjhgfgnvfzfnvbbstgsgtspdhtfsncttlwmllbbvqftjtshfjlqtjwlvrbwmzfhdmcbhtqdzqtzmdljqprwhqwcvbtfqbpjwztgqrvlrqdwmqrqzvptsgjdqnqdfwfpjdglwgpdrcfrrzmpjmtbwwrqqcsnmphcqtthlnlzlfftrjmtjwwqrldcfjjclzrsqvltsfchfggcwbzbtpqcjfvgpwnwwqrdbdvjplgsgctdhqvttmtpmmjfcqdslhjgtdppbmzbrfbrrjncfdhlmjgdwjrmbgpcgctghbvphpgfvvfvtplqrhnjjhqntjvbsggvrvjgrwptcgqgrmjtprvhnvjsdsfqrqrrltlhvfsjsqpbwndbsnjzplcfqtfbdqdzdvnljcsmjnrmwwjzqwsjbdlclsmccbqwnlpltqhqhmthhrdjwlqwrbltghsvblqntvjqzpmmpqwrrwvhmtfqzhrmjfglwfpthhgbhdmrtprtqgqbdcfqlbbvmzmchzglmpzdvhpqchhclbcvrcmhtzqfzrplbvmdhghsttzgdjbgmmtvlqjsstgwlwchhwmflwbgljgszghvfdsngbtbcnhzmmdmsjqfbcsmgpjwjqgwqdlrgznnmhphbrzcgnqczpcbljjmhnnrmzlpqbswwcjpjqcrtdmgprpmmbprwlmpzcmwlnbzqjsgftrncvmjmjwvqgszsrmrczhjnwlghgndhbthwlhfbncrwqfgnshrmdfhwmfvllhvbmmllwfbgrnrttpzffzvcfjfbrmdqfcfrdqsltpbbttnqnbncfhwghfbgwrltbhwmmlpczsvvdnwhchgfplnjsttsqvsznwvlwzgfnhfrrgplsfwrwnbfhblwtjpldjmzrglhppgsjsgzssbbgrrbdmpwhgjjmlfnpdbvtntcwrvltgfnrgwttvvjhqljjvvnmztwgzcclgbjnjspzwnpgtgvhhhqbzrnvmdcljcdncvpnpdhrhqwvlhllbsrmjbzlgczwjsrvqrqfqmtjrnpbtdhsrfbhrgtgnrmlgcwcmrvrdfcqbfcqczjchgrjpzqfqqmcpvnvbrssfrfsrjmlngplqqsnclgvpfhjbzdppjftlgbmcgdbrvqrclvtdnzhhcmzlrdrgbrqrlvfcnvznnqwswvhdpbbjmsqzcrmjngzmdftjzsjvgfdtcvdwhnwwjlcgcmflzzpzpgzrvmptbjgrdjbzscrglhcjppdjdshnvvbsnnddtbwsdrpnbnlrtppcrzbbjrfzhbwgmjqtmgjvmrjgfdndlmqvhgwprsjnhcmrnfdfdzggjjzcccnsnwwbjzmsfjjfhclptfcwqjhnphpwzszjmsrtnbqpqsvcfcvrrgclwlbrqngdcdlzrdfpvbgtznjzdvjngrgswhjnrpgswtqflpgvnpbsvcrtgtzcbhdjpbjwnpdzcmprtzlppbqvpzrrlbssmwhhvqqpmwggnzwcfdnzccjrrncnvjqgbpstctwpqvhdsbcsjrpbzbdlwwvjngtbnvpthppglgsnrbwnvpzldhsgwqhclgwrdsvcfdclvdsbrhcfnbgrtqswstnjfmfrdgphpvgjfqzcwnpcghdhtflgdnhhnnnwrpnmppszgqdcqjqpnccfsqjsmwtqvzwfqvtwtthwswmcqqcqjwcgwgzgmnpzbfpzrqbvqhbhtsvvbppbmqzfnsmwppzvsctgcncztsqdfhnlwjjtvwcchvnphwpnpzqsjhlrcmnbthtqlfclnsfdtpwfzljdpfszvhgzdpzhbjtphbfbmwgfrfplntfqhgpbjzghmblzzhdcbptngqwrtfmvtbhphpvdwpswbscrwzhnvqfwlbwwqqgstgmbqlllspbhbpjmmrfhmjwzdnsdwmpvlrspgzmdjwqwcjpbgwspsghjdvrbbsbtgwptqdvvdhbhqbdhpbzdsdwsjdbjnztdqqrdhwhtpvcbblbmjgmbpqghdsfthzjffrdvldfsnpcsmnzwzcqlnvcrcbqnfcdrfbffrvhqsbqjnnbzsqvqqdqwmsvbqvtgmnnlthpngfsljqnrdhhzpmwsnqvrgdnvlbgnndfcpjfgmzqssvnnrwbmslcqpnhnnwzggsjvqcsqpfzjcmcppntmsdtfggzdncqbfjsqvbzgnnlsdbgjqffsmvnbqlsrjwdmcjbrsrpchnnhdtlcdhfdltmlvtrwjpzphtbhzzrlrwbbhhpntgbcfmphnbrjdhrhvmvhfglrncngjdsvbfrqtqzsgvlzjqzcqnwdcfgvnpsqpphwfsdvpgnchjnnjhsqgvlqcvhzzzcrsqcvrbsbjbdbgddlbb
-    """;
+        var y = 0;
+        foreach (var line in Input.AsSpan().EnumerateLines())
+        {
+            var x = 0;
 
-    #endregion
+            foreach (var symbol in line)
+            {
+                if (symbol == '^')
+                {
+                    start = new Point(x, y);
+
+                    grid[x, y] = false;
+                }
+                else
+                {
+                    grid[x, y] = symbol switch
+                    {
+                        '#' => true,
+                        _ => false
+                    };
+                }
+
+                x++;
+            }
+
+            y++;
+        }
+
+        return (grid, start);
+    }
+
+    private static Point NextDirection(Point direction)
+    {
+        if (direction == DirectionUp)
+        {
+            return DirectionRight;
+        }
+
+        if (direction == DirectionRight)
+        {
+            return DirectionDown;
+        }
+
+        if (direction == DirectionDown)
+        {
+            return DirectionLeft;
+        }
+
+        if (direction == DirectionLeft)
+        {
+            return DirectionUp;
+        }
+
+        throw new ArgumentException("Invalid direction", nameof(direction));
+    }
+
+    private readonly record struct Point(int X, int Y) : IAdditionOperators<Point, Point, Point>
+    {
+        public static Point operator +(Point left, Point right)
+        {
+            return new Point(left.X + right.X, left.Y + right.Y);
+        }
+    }
 }

Days/Day8.cs

@@ -1,314 +1,169 @@
-using Spectre.Console;
+using System.Collections.Frozen;
+using System.Numerics;
+using Spectre.Console;
 
 namespace AdventOfCode.Days;
 
 public class Day8 : Day
 {
     public override int Number => 8;
-    public override string Name => "Treetop Tree House";
+    public override string Name => "Resonant Collinearity";
+
+    private const int GridSize = 50;
+
     public override void RunPart1(bool display = true)
     {
-        var grid = CreateGrid();
+        HashSet<Point> antinodePositions = [];
 
-        var valid = new HashSet<(int, int)>();
+        var frequencyAntennas = ParseAntennas();
 
-        // Check each line from left to right
-        for (int i = 0; i < grid.GetLength(0); i++)
+        // Find antinodes for each frequency
+        foreach (var (_, antennas) in frequencyAntennas)
         {
-            int previousTreeSize = -1;
-
-            for (int j = 0; j < grid.GetLength(1); j++)
+            // Take antennas by pair to find antinodes
+            foreach (var firstAntenna in antennas)
             {
-                var size = grid[i, j];
-
-                // The tree on the left is blocking the view, stop searching on this line
-                if (size <= previousTreeSize)
+                foreach (var secondAntenna in antennas.Where(a => a != firstAntenna))
                 {
-                    continue;
-                }
+                    var firstAntinode = firstAntenna + (firstAntenna - secondAntenna);
+                    var secondAntinode = secondAntenna + (secondAntenna - firstAntenna);
 
-                valid.Add((i, j));
-                previousTreeSize = size;
+                    if (firstAntinode is { X: >= 0 and < GridSize, Y: >= 0 and < GridSize })
+                    {
+                        antinodePositions.Add(firstAntinode);
+                    }
+
+                    if (secondAntinode is { X: >= 0 and < GridSize, Y: >= 0 and < GridSize })
+                    {
+                        antinodePositions.Add(secondAntinode);
+                    }
+                }
             }
         }
 
-        // Check each line from right to left
-        for (int i = 0; i < grid.GetLength(0); i++)
-        {
-            int previousTreeSize = -1;
-
-            for (int j = grid.GetLength(1) - 1; j >= 0; j--)
-            {
-                var size = grid[i, j];
-
-                // The tree on the left is blocking the view, don't take it
-                if (size <= previousTreeSize)
-                {
-                    continue;
-                }
-
-                valid.Add((i, j));
-                previousTreeSize = size;
-            }
-        }
-
-        // Check each column from top to bottom
-        for (int j = 0; j < grid.GetLength(1); j++)
-        {
-            int previousTreeSize = -1;
-
-            for (int i = 0; i < grid.GetLength(0); i++)
-            {
-                var size = grid[i, j];
-
-                // The tree on the top is blocking the view, stop searching on this column
-                if (size <= previousTreeSize)
-                {
-                    continue;
-                }
-
-                valid.Add((i, j));
-                previousTreeSize = size;
-            }
-        }
-
-        // Check each column from bottom to top
-        for (int j = 0; j < grid.GetLength(1); j++)
-        {
-            int previousTreeSize = -1;
-
-            for (int i = grid.GetLength(0) - 1; i >= 0; i--)
-            {
-                var size = grid[i, j];
-
-                // The tree on bottom is blocking the view, stop searching on this column
-                if (size <= previousTreeSize)
-                {
-                    continue;
-                }
-
-                valid.Add((i, j));
-                previousTreeSize = size;
-            }
-        }
-
-
         if (display)
         {
-            AnsiConsole.MarkupLine($"[green]Total viewable trees: [yellow]{valid.Count}[/][/]");
+            AnsiConsole.MarkupLine($"[green]Unique antinode positions count: [yellow]{antinodePositions.Count}[/][/]");
         }
     }
 
     public override void RunPart2(bool display = true)
     {
-        var grid = CreateGrid();
+        HashSet<Point> antinodePositions = [];
 
-        var maxScenicScore = 0;
+        var frequencyAntennas = ParseAntennas();
 
-        // Compute scenic score for each tree
-        for (int i = 0; i < grid.GetLength(0); i++)
+        // Find antinodes for each frequency
+        foreach (var (_, antennas) in frequencyAntennas)
         {
-            for (int j = 0; j < grid.GetLength(1); j++)
+            // Take antennas by pair to find antinodes
+            foreach (var firstAntenna in antennas)
             {
-                var size = grid[i, j];
-                var score = ComputeScenicScore(grid, i, j, size);
-
-                if (score > maxScenicScore)
+                foreach (var secondAntenna in antennas.Where(a => a != firstAntenna))
                 {
-                    maxScenicScore = score;
+                    // Always add antinodes on antennas if a pair is formed
+                    antinodePositions.Add(firstAntenna);
+                    antinodePositions.Add(secondAntenna);
+
+                    // Compute potential antinode positions
+                    var firstAntinodeOffset = firstAntenna - secondAntenna;
+                    var secondAntinodeOffset = secondAntenna - firstAntenna;
+
+                    for (var i = 1; ; i++)
+                    {
+                        var firstAntinode = firstAntenna + (i * firstAntinodeOffset);
+
+                        if (firstAntinode is { X: >= 0 and < GridSize, Y: >= 0 and < GridSize })
+                        {
+                            antinodePositions.Add(firstAntinode);
+                        }
+                        else
+                        {
+                            break;
+                        }
+                    }
+
+                    for (var i = 1; ; i++)
+                    {
+                        var secondAntinode = secondAntenna + (i * secondAntinodeOffset);
+
+                        if (secondAntinode is { X: >= 0 and < GridSize, Y: >= 0 and < GridSize })
+                        {
+                            antinodePositions.Add(secondAntinode);
+                        }
+                        else
+                        {
+                            break;
+                        }
+                    }
                 }
             }
         }
 
         if (display)
         {
-            AnsiConsole.MarkupLine($"[green]Max scenic score: [yellow]{maxScenicScore}[/][/]");
+            AnsiConsole.MarkupLine($"[green]Unique antinode positions count: [yellow]{antinodePositions.Count}[/][/]");
         }
     }
 
-    private int ComputeScenicScore(int[,] grid, int i, int j, int size)
+    private FrozenDictionary<char, List<Point>> ParseAntennas()
     {
-        var visibleTreeCountLeft = 0;
-        var visibleTreeCountRight = 0;
-        var visibleTreeCountTop = 0;
-        var visibleTreeCountBottom = 0;
+        var antennas = new Dictionary<char, List<Point>>();
 
-        // Look on left
-        for (int x = j - 1; x >= 0; x--)
+        var y = 0;
+        foreach (var line in Input.AsSpan().EnumerateLines())
         {
-            visibleTreeCountLeft++;
-            var nextTreeSize = grid[i, x];
+            var x = 0;
 
-            // Blocking the view
-            if (nextTreeSize >= size)
+            foreach (var frequency in line)
             {
-                break;
+                if (frequency is '.')
+                {
+                    x++;
+
+                    continue;
+                }
+
+                if (!antennas.TryGetValue(frequency, out var list))
+                {
+                    list = [];
+                    antennas[frequency] = list;
+                }
+
+                list.Add(new Point(x, y));
+
+                x++;
             }
+
+            y++;
         }
 
-        // Look on right
-        for (int x = j + 1; x < grid.GetLength(1); x++)
-        {
-            visibleTreeCountRight++;
-            var nextTreeSize = grid[i, x];
-
-            // Blocking the view
-            if (nextTreeSize >= size)
-            {
-                break;
-            }
-        }
-
-        // Look on top
-        for (int y = i - 1; y >= 0; y--)
-        {
-            visibleTreeCountTop++;
-            var nextTreeSize = grid[y, j];
-
-            // Blocking the view
-            if (nextTreeSize >= size)
-            {
-                break;
-            }
-        }
-
-        // Look on bottom
-        for (int y = i + 1; y < grid.GetLength(0); y++)
-        {
-            visibleTreeCountBottom++;
-            var nextTreeSize = grid[y, j];
-
-            // Blocking the view
-            if (nextTreeSize >= size)
-            {
-                break;
-            }
-        }
-
-        return visibleTreeCountLeft * visibleTreeCountRight * visibleTreeCountTop * visibleTreeCountBottom;
+        return antennas.ToFrozenDictionary();
     }
 
-    private int[,] CreateGrid()
+    private readonly record struct Point(int X, int Y)
+        : IAdditionOperators<Point, Point, Point>,
+            ISubtractionOperators<Point, Point, Point>,
+            IMultiplyOperators<Point, int, Point>
     {
-        var lines = Input.Split('\n').Select(s => s.Trim()).ToArray();
-
-        var grid = new int[lines.Length, lines[0].Length];
-
-        for (int i = 0; i < grid.GetLength(0); i++)
+        public static Point operator +(Point left, Point right)
         {
-            for (int j = 0; j < grid.GetLength(1); j++)
-            {
-                grid[i, j] = int.Parse(lines[i][j].ToString());
-            }
+            return new Point(left.X + right.X, left.Y + right.Y);
         }
 
-        return grid;
+        public static Point operator -(Point left, Point right)
+        {
+            return new Point(left.X - right.X, left.Y - right.Y);
+        }
+
+        public static Point operator *(Point left, int right)
+        {
+            return new Point(left.X * right, left.Y * right);
+        }
+
+        public static Point operator *(int left, Point right)
+        {
+            return new Point(right.X * left, right.Y * left);
+        }
     }
-
-    #region Input
-
-    public const string Input =
-    """
-    220102001303332210111144403232401113333122342344231242454143210203320302212443030013122003001101100
-    002012111323310331302003042221132010432132445255133124455255223004414440440003301012203200022100210
-    200201202011003110423331304200331011531224544245554512113213335525210302033141324322321031312102110
-    100020212221032131124244103404003222433224521422334123232422124515312313433224100204010121132311000
-    200113321032110240111004030043155443522233113242534443312241445211112450323031312112213000023232100
-    000123222130133422212242344055134444215311551422533215421415442551425225432130430124043210211111310
-    220013001310041302023441034332322423241253523413533421512551432233114553552003013120121302130121320
-    103122021001324130041021443134551553414353255343356623553131221454542451225451442032131420112320101
-    012123121220242033212021343121244143344324534625253522262464534215422121222134240012234133102111220
-    330310331223230000003152443554413335326665536266322522652335566553114314142351411020403401413302112
-    033203120011110011132251145135331144533354253453463224233644324632453434135523253300131220303213123
-    320111230330142103134512313345346434643654336344264466663434525446644113511452351451422214014013322
-    001132233321313303345535112443242622242446334234425332545346556362543355243332135453212444110331303
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-    033344041000113254352455455346236225633465644343664557364344535543336532242444234311533433344140212
-    213210413044552341333323656654354424366446744766744473434577534775255332236334522521333331002022121
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-    321034434351253424555342636457546533636345766763737363536656637564757633453436366225532223151301123
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-    123112125155234436477477667347767767746589595765887578895688659457644647637353775542533353231324344
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-    325343515546653536653454765454579566578777977788879878787979966579696677474785343347473444324354355
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-    011225512566433343766434774658485575577887896689896789789788897667989867646846655537445534555245154
-    353122224246523453336574684477667558859686788676888887889677967668868867745484457553323245424151214
-    025211533334552466553436874465855779555988968677869768998666855765958765844553645533522566662215435
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-    123513525116652325364735577676854466795879775965858579978758766786788576585574533555234644544424444
-    201422231514666656435556464744556487779676697575668797755696587875664885475643663462362633532152224
-    443133412441244332664735557756557478667877999697777576977768645754645558333564346654626425334525344
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-    331232153352336525225567445365565486747774487468877475878758554778586376763333443326544225345123013
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-    200031013552112555654336435633347655674473538755855765665344475745556736546535462654344221551230302
-    304022204315531423544354645467655764773637456746376536645753764476654735362436623665431353330033320
-    001214000225135351445433524663673656735567443667544556374445736766637732424362445435124235202421144
-    133240444115255522316642262344554645657446334644647444534543345455733253453543223511253231133210321
-    324313341004114352115254632235242543363566666546735757746734646346355536356645334223223155213043334
-    322012103401425423541123244634634342577565467364645454366476547536536356344363313411143511003322321
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-    210201421410133422542335534522343332455655473755663556635632662655563553445642432325453033042340112
-    012224401212432145413124536446542562653225343456763356434464356455233544345355532151231212104022112
-    312232323430402414252325451525553345425256326265324326656464322435443535213233315511433100124021321
-    010230232102113031224241215434543254266544664634225463436365465636465234441113521431122331212121101
-    212212302203143433332245352152333246623456656325435343642442543354454522241344343333411433411331230
-    011102200023414304323524211214225553365332454633645434256444354263245252314454334421304444012133303
-    120113010124021413002342554241434235565233233626345455655236425423152444344321441224210011210001020
-    101033322321412021400115241224135351431466535533654236552223322311141154321444212340220200110122301
-    011220031300131001424314223221135334414132553352224226351421342145342332444324224232200001102210233
-    121312303322224212003013214154522352135431322413434142221234334123523122531033230010321012211132201
-    012020110022314203102101331443513341244141113213442111455332441213534235144341443443042312110221221
-    100013222332201123334301101412554224524144445454322353452424512151232340130231214403422202221333120
-    211200011012011223124042241233103554151124335225451435512351451314113131210120200021021301331230211
-    222211000301233212310103403144201411351211113145331241322345244155131304344032001313100223022021012
-    """;
-
-    #endregion
 }

Inputs/Day10.txt

@@ -0,0 +1,60 @@
+670107898789217654342123456782345678011256767898765465432101
+789234567654308210256034105891089019100349897767874376569101
+658341234530989300107845234521078323270110588758901287478272
+345450347621895418916976367652569454589223679643210896564383
+430569678934786917014989898743458765678334534554034787665898
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+437876501910543215214985400303434234784966549834296502107610
+108978967865676784305673212345125105672877838126787411098523
+232169054654985895676894501876056216781236923035498321015432
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+321039654126789123347854985438765430439876763431233054965235
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+581401232149863265121012530034341013691456701456504567861087
+672310345038054396432343448101231012782347650987623438932387
+965498786521178987503453559874342103452878943298510129873498
+878945697810265089612354567565213478501987801123456018784567
+969034398924354108743543658106904569612016772010567105695436
+450123454589443298874632109237876548743125983400198234306721
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+198787656345678967632365432127680108912322589863265434512387
+234594565676589874541050121218998012301011267770172123001989
+109683410789490163698210930300107321694120178089085012123476
+658762125610301252784327845451256430783243569172196781018565
+567891034521212341075456786965344567654652410234505492109410
+656900347234301056789845697874498698676701322343012343478326
+543211298165692345698926543289567789589887011452321034567567
+432104347076780434767810432101125654434996320961478933003498
+218765456987101229896321101911036763221745467870567122112567
+309894365896234310785410110876545894100876786987651033678985
+456789223345985401656789212567030345210965495698776544543234
+787650110276576564565094303498121236321234324308989434350198
+896343023183465433004185478767870387123456710217375621060167
+125432134092174332113276769365968791001249854567434789871256
+034334547894089211223498853478959601098345983098723348964343
+301227656323456200124567942562344512367896572129810254328321
+212018965214387103438901231001123201456087561234722167219450
+323127656103898234567872102121010126545123450165621098308761

Inputs/Day11.txt

@@ -0,0 +1 @@
+0 7 6618216 26481 885 42 202642 8791

Inputs/Day12.txt

@@ -0,0 +1,140 @@
+MMNNPPPPGGGGAGGPPPPPPPPPZZZZZZZLLLLLLLEEEEEEEEEEEEEEEAAAAAAAAAAAAAAAAAAAAMMMMNNMMMMMMMMMMMMMMMMAARRRRRRRRRRRRRRRRRRHHHHHHHHHHHHHAAAAAAAAAAAA
+MNNNPNPPGGGGGGGPPPPPPPEPZZZZZZZLLLLLLLWWEEEEEEEEEEEEEAPAAAAAAAAAAAAAAAAAAMMMMMMMMMMMMMMMMMMMAMMAARRRRRRRRRRRRRRRRQRHHHHHHQHHHHHHHWAAAAAAAAAA
+NNNNNNNPGGGGGGGGPPPPPPPZZZZZZZZZLLLLLLLEEEEEEEEEEEEEEPPPPAAAAAAAAAAAAAAMMMMMMMMMMMMMMMMMMMMMAAAAAAAAAVRRRRRRRRRQQQQHHQQHQQQHQHHHHWWWWAAAAAAA
+NNNNNNNNGGGGGGGPPPPPPPPPZZZZZZLLLLLLLLLLEEEMEEEEEEEEEEPPPPAAAAAAAAAAAMMMMMMMMMMMMMMMMMMMMMMMMAAAAAAVVVVRRRRRRRQQQQXQQQQQQQQQQQQHHHWWWWWAAAAA
+NNNNNNNYYGGGGGGPPPPPPPPPZZZZZZZLLLLLLLLMMMMMEEEEEEEEEPPPPPPAAAAAHAAAAMMMMMMMMMMMMMMMMMMMMMMMMMMAVVVVVVVRRRRRQQQQQQQQQQQQQQQQQQQHHWWWWAAAAAAA
+NNNNNNNXYYYCCCIPPPWZPPPPPZZZZZZLLLLLLLSSMMSSEEEEEEEPPPPPPPPPPAAHHAAAAHMMMMMMMMMMWWMMMMMMMMMMMMMMMDDVVVVRRRRRRQQQQQQQQQQQQQQQQQQHHWWWWWAWAAAA
+NNNNNNXXYCCCCCIPPPPZZPPPZZZZZZZZLSLSSSSMMMSSEEEEEEEPPPPPPPPPPPAAHHAAAHHMMMMMMMMMMWMTTMMMMMMMMMMDDDDVVVVRRIIMRMMMQQQHTTQQQQQQQQQQQWWWWWWWWWWA
+NNNXXXXXXCCCCCCXPZPZZZPZZZZZZZZZZSSSSSSSSSSSEEEEEEEEPPPPPUUXXXHAHHHAHHHMMTMMMTMMMMTTTMMMMMMMMMDDDDDVIIIRIIMMMIMZQQQHTHQQQQQQQQQQAAWWWWWWWWAA
+NNNNXXXXCCCCCCCZZZZZZZZZZZZZZZSSSSSSSSSSSSSSSSEEFFPPPPPUUUXXXHHHHHHHHHHHTTMMMTMMMMTTTTTMMMMMMDDDIDDVIIIIIIIMMMMMQQQHHHQQQQQQQQQQAAAWWWWWAWAA
+NNNNNXXXXCCCCCAVVZZZZZZZZZZZUUUSSSSSSSSSSSSSSFEFFFFPPPPUUUXXXXHHHHHHHHHHHTMTTTTTMMTTTTTTMMMDMDDIIIVVIIIIIIIMMMMMMQQHHQQQQQQQQGGGQAAAWWWAAAAA
+NNNNNXXXCCCCCVVVVVVZZZZZZZZUUUUSSSSSSSSSSSSSFFFFFFFPPPUUUUXUXHHHHHHHHHHHHTTTTTTTMMTTTTTTMMDDDDDDIIIIIIIIIIIMMMMMMQIHAQQQQQQQQQQQQAAAAAWAAAAA
+NNNNNNXCCCCCCCVVVVZZZZZZZZZUUUUSSSSSSSSSSSSSSFFFFFFPPPUUUUUUXHHHHHHHHHHHHHTTTTTTTTTTTTTTTTTDDDAAAAIAIIIIMMMMWMMDDGGGAQQQQQQQQQQQQQAAAAAAAAAA
+NNNNNNNCCCCCCCCVVZZZZZZZUZZUUUUSSSSSSSSSSSFFFFFFFFFFPPUUUUUUUHHHHHHHHHHTTTTTTTTTTTTTTTTTTTDDVVAAAAAAIIIIIIIMMTTDDGGGAQQQQQQQQQQWWWUUUAUUUAAA
+NNNNNNNNCCCCCCCCVVZZZZZZUUZUUUUSSSSSSSSSSSSSFFFFFFFFPPUUUUUUHHHHHHHHHHHHHHTTTTTTTTTTTTTTTTTDVVXAAAAAIIIIIIIMTTTTTTTGGQQQQQQQQQQWWWUUUUUAAAAA
+NNNNNNNNNNNCCCCCCCZZZZZZUQUUUUUUUSSSSSSSSXSSOFFFFFFFFPPPPUOOHHHHHHHHHHHTTTTTTTTTTTTTTTTTTTTDVVVAAAAAAIIIIIIMTTGTTGGGGQQQQQQQQQQWWWUUUUUUAAAA
+NNNNNNNNNNCCCCCCCCZZZZZUUQUUUUUUUSSSSSSSSSSOOOOFPFPFPPPPPPPPPPHHHHLHHHHTTTTTMMMTTTTTTTUTTTTDDVVVVAAAAIIIIIIMTTTTTGGGGQGGGQQCQQWWWWUUUUUUUUUA
+NNNNNNNNNNNNCCCCCBBMZZZUUUUUUUUUUSSSSSSSSOOOOBBPPPPFPPPPPPPPPPXHHHHHHHHTTPTTMMMTTTTUTUUUUUUUVVVVVVVAAAIIIIIITTTTTGGGGGGGGQFFWWWWWWUUUUUUUUUU
+NNNNNNNNTNCCCCCCBUBBHCCCUUKUUUUUSSSSSSSSOOOOOBBPPPPPPBPPPPPPPPHHHSSSSHPPPPPMMMMMTTTUUUUUUUUOUVVVVVVAAIIIIIIITTTTGGGGGGGGGFFFWWWWUUUUUUUUUUUU
+NNNNNNNWCCCCCCCBBBBBBCCCCCUUUUUUSSSSSRRRROROOOBBBBBBBBBBPPBBBBHSSSSSSSPPPPPMMMMMTTUUUUUUUUUUUVVVVVVVVVVVVXIITTTGGGGGGGFFFFFFSSKWUUUUUUUUUUUU
+NNNNNWWWWCCCCCCCBBBBHCCCCCUUUUUUUSSTGRRRRRRRRBBBVBBBBPPPPPBBBBSSSSSSSSPPPPPPMMMMMTTUUUUUUUUUUVVVVVVVVVVVVXXUUGGGGGGGGGFFFFFNSSKKJUUUUUUUUUUU
+MMMWWDWWIWWCCCCBBBBBBCCCCCCCCCCCCCGGGGRRRRRRRVVVVBBXXXXXPPBBSSSSSSSSSPPPPPPPMMMMMUTUUUUUUUUUUUUVVVVVXXXXXXXUUGGGGGGGGGFFFFFSSKKKJUUUUUUUUUUU
+MMMMWWWWWWWCCCCBQBBBBCCCCCCCCGGCGGGQGGRRRRRRRVZZZZZXXXXXBBBSSSSSSSPSPPPPPPPPPMMMMUUUUUUUUUUUUUUFVVVVXXXXXXXUUUUGGXGGGGGFFFFAAAKKJUUUUUUUUUUU
+MWWWWWWWWWCCCCCCQBQBCCCCCCCCCCGCGGGGGGRRRRRVVVVVZZZXXXXXZBBSSSSSSSPPPPPPPPPPPMMMMMUUUUUUUUULFFUFFVXXXXXXXXXUUUUGXXGGGEFFFKKKKAKKKKKUUUUUUUUU
+WWWYWWWWWWKCCCQCQQQCCCCCCCCCCGGGGGGGGGGGGGGVVVVVVZZXXXXXZZBBSBBSSSPPPPPPPPPEEMMMMMGUUUUUUUULFFFFVVXXXXXXXXXUUUUUBBUUGEFFFKKKKKKKKKUUUUUUUUUU
+WWWWWWWWWWWQQQQQQQQCCCCCCCCCCGGGGGGGGGGGGGGVVVVVVVZXXXXXKKKBBBBSSSSUUPPPPPPEMMSMMGGVAAAUUQFFFFFFVVVVVXXXXXUUUUBBBUUREEEMMKKKKKKKKKKKUUUUUUUU
+RWWWWWWWWWWQQQCQQQCCCCCCCGGGGGGGGGGGGGGGGGVVVVVVVVVXXXXXKKKKKBBBBBSSUPPPPPSMMMSSMMGVVVVVVQFFFFFFFFVVVXXXXXUUBUBBBBBREEEMMMMKKKKKKKKKUHUUUUUU
+WWWWWWWWWWWQCCCQQQQCCCCCCCCCGGGGGGGGGGGGGGGVVVVRVVRXXXXXKKKKBBBBBBBBPPPPPPSSSSSSMMMVVVVVVVFFFFFFFFFFFXXHXUUBBBBBBBRRREMMMMMKKKKKKKKKKHHHUUUU
+WWWWWWWWWWWCCCCQQQCCCCCCCCCIGIIGGGGGGWGGGGVRRRRRRRRXXXXXKKKKKKKBPBBPPPPPPSSSSSSSSMVVVVVVVVVVFFFFFFFFFHHHUUBBBBBBBRRRMMSMMMKKKKKKKKKKKUHUUUUU
+WWWWWWWWWWWWCCCCCCCCCCCCCCIIIIGGGGGGGWGGGVVRRRRRRRXXXXXXKKKKKBBBPPBPPRPPPPPSSSSSSVVVVVVVVVVVAFFFFFFFFFHHHHIBBBBBRRRRMMMMMMSKKKKKKKKVVUUUUUUU
+WWBBWWAWWUUUCCCCCCIQQCCCCIIIIRRRRRRRWWWGGVRRXXXXXXXXXXXXKKKKBBBBPPPPPPPPPPPPSSSVVVVVVVVVVVVVAFFFFFFFFFHHHBBBBBHHHRRRMMMMMMMKKKKKKKKVUUUUUUUU
+WWWAAAAWUUCCCCCCCIIICCCCCIIIIRRRRRRRWWGGVVVVXXXXXXXXXXXOBKBBBBBPPPPPPPPPPPPPPPPPLVVVVVVYVVVEFFFFFFHHHFFHHHHHBBBBHHHMMMMMMMMMKKKKKUUUUUUUUUUU
+WWWAAAAUUUUCCCCCCIIIIIIIIIIIURRRRRRRRRGGXXXXXXXXXXXXXXXRBBBBBBBBPQPPPPPPPPPUPPXEEVEVVVVVVVEFFFFFFFHHFFHHHHHHHHBHHMMMMMMMMMMMKKKKKKKKUUUUUUUU
+WWWAAAAUAUUCCCCCCLLIIIIIIIIUURRRRRRRRRGGXXXXXXXXXXXXXXXRRBBBBBBBPPPPPPPPPPPUPVEEEEEVVVVEVEEEEEFFFFHHHHHHHHHHHHHHHHMMMMMMMMMKKKKKKKKUUUUUUUUU
+WWAAAAAAAAUEEEOOOLIIIHIIIIIIURRRRRRRRRXXXXXXXXXXXRXXXXXXRBBBBBBBBPPPPBPPPBEBBBEEEEEVVVEEEEEEEEEEFHHHQHHHHHHHHHHHHHMMMMMMMMMMMKKKKKUUUUUUUUUU
+OOAAAAAAAAUOOOOOOLLLLIIIIIIIURRRRRRRRRXXLLLLXXXXXRXXXXXXRRMBBBBPBPPPPBBTPBBBBEEEEEEEEVEEEEEEEEEEFQQQQHHHHHHHHHMMMMMMMMMMMMMMMMMKKKKUUUUUUUUU
+OACCAAAAAGAOOOOOOELLLLIYIIRRRRRRRRRRRRXLLLLLXXXXXRRRRXXXRRRBBBBJKKPPPBBBBBBBBBEEEEEEEVEEEEEEEEEEEQQQQQHHHHHHHHHMMMMMMMMMMMMMMMMKKKUUUUUUUUUU
+AAAAAAAAAAAOOOOOEEELLLIYYVRRRRRRUUUUXXXLLLLLXXXXXRRRRXXXRMRBBBBJKJUBBBBBBBBBBBCEEEECEEEEEEEEEEEEQQQQQQHHHHHHHHHMMMMMMMMMMMMMMMWDDDWUUUUUUUUU
+AAAAAAAAAAAOOOOOUULLLYYYRRRRRRRRUUUUXXXXLLLLXXXXXXXXXXXXXMMCCBLJJJUBBBBBBBBBBQCCCCCCEEEEEEEEEEEEEFQQQHHHHHHHHMMMMMMMMMMMMMMMMWWWWWWWUUUUUUUU
+AAAAAAAAAAROOOOORRRRRRRRRRRYYDUUUUXXXXXXXLLLXXXXXXXXXXXXXCCCCCJJJJUUUUUBBBBCCCCCCCCCCEEEEEEEEEEEEEQQQEEHHHHHHHMMMMMMMMMDDDDDMWWWWWWUUUUUUUUU
+ZZAAAAAXAAROOOOORRRRRRRRRRRDDDUOUUAAXXXXWWLLLLRRXXXXXXXXXCCCCJJJJJJJJJJBBBLLLLLCCCCCEEEEEEEEEEEEEEEEEEEHEEEHHHMMMMMMMDDDDDDWWWWWWWWWWUWUUUUU
+ZZZAAAAOOOOOOOOORRRRRRRRRRRYDUUOUUUAXXXXXAAAALRRXXXXXXXXXCCCCCCCJJJJJLLLLLLLLLCCCCCCEEEEEEEESEEEEEEEEEEEEEHHHMMHMMMMDDDDDDDWWWWWWWWWWWWWWUUU
+ZZZAAAUOOOOOOOOORRRRQYYYYYYYYOUOUUAAAAAAAAAAALRRXXXXXXXXXCCCCCCJJJJJJLLLLLLLLLCCCCCCCCEEWWEEEEEEEEEEEEEEEEEHHHHHMHHHQQQQQQQQWQWWWWWWWWWWWWUU
+ZZAAXAUOOOOOOOOORRRREYYYYYOOOOOOOOAAAAAAAAAAAARAAAAAZXXXCCCCCCCJJJJJJJLLLLLLLLCCCCCCCCEEWWWEEEEIEEEEEEQQHHHHHHHHHHHQQQQQQQQQQQWWWWWWWWWWWWUU
+ZZAAXAUOOOOOOOOORRRROOYYREOOOOIOOOAAAAAAAAAAAARAAAAAZZZYYCCCCCCJCJJJJLLLLLLLLLCCCCCCCCCWWWEEEEIIEEEEEEEQQHHQHHHHHHQQQQQQQQQQQQWWWWWWWWWWWWUU
+ZZAAUUUOOOOOOOUUEEEEEEEEREOOOOIOOOAAAAAAAAAAAAAAAAAAZZZYYYYCCCCCCCCLLLLLLLLLLLLLCCCCPCWWWWEEEEIIIIEEEEEQQQQQHHAQQQQQQQQQQQQQQQWWWWWWWWWWWUUU
+PPPPPYUOOOOOOOEEEEEEEZEEEEOOOIIIIOAAAAAAAAAAAAAAAAAYYYYYYYYCCCCCCCCLLLLLLLLLLLLLCCCPPCWWWWWEEEIIIIEEEEQQQQQQQJJJJQQQQQQQQQQQQQQQQWWWWWWWUUUU
+PPPZYYYOOOOOOOOOOOEEEEEEEEIIIIIIIIAAAAAAQQAQAAAAAYAYYYYYYYYCCCCCCCLLLLLLLLJJLFLFFCTFFWWWWBBEEIIIIIKQQEQQQQQQJJJJJQQQQQQQQQQQQQQQQQWWWWWWUUUU
+PPPZYYYYYYYYYOOOOOEEEEEEEIIJIIIIIIACAAQQQQQQQAAYYYYYYYUYYYYCCCCCCCCLLLLLLLFFJFMFCCFFFSBBBBBBIIIIIIIQQQQQQQQQQQJJJJQQQQQQQQQQQQQQQQQWWKWWWUUU
+PPPYYCYYYYYYYOOOOOOEEEEEEIIIIIICCCCCCCCCCQQQQQYYYYYYYYYYYYYCYCCCCCCCLOOOLLFFFFFFFCFFFSSBBBBBIIBIIIBBQQQQQQQQQQQJJJQQQQQQQQQQQQQQQQQWLWWWWUUU
+PPYYYYYYYYYYYOOOOOOEEEEEEEIIIIICCCCCCCCCCQQQQQQQQYYYYYYYYYYYYCCCCCCOOOOOLHHFFFFFFFFFFFSSBBBBBBBIBBBQQQQQQQQQQQQQJJJQNQQQQQQQQQQQQQHHHHWWWWUU
+PYYYYYYYYYYYYOOOOOOEEEEEEEIICCCCCCCCCCCCCQQQQQQQQYYYYYYYYYYCCCICKITOOOOOHHHFFFFFFFFFFFFFBBBBBBBBBQQQQQQQQQQQQQJQJJJOQQQQOQQQQQQQQQQHHHHWWWHH
+PYYYYYYYYYYYYOOOOOOEEEEEIIIICCCCCCCCCCCCCQQQQQQQQYYYYYYYYZYSCCIIKIIOOOOOHHFFFFFFFFFFFFFFFFBBBBBBBBQQQQQQQQQQQQJJJJOOOQQQOQQQQQQQQQHHHHHHWWHH
+PYYYYYYYYYYYYOOOOOOEEIIIIIIICCCCCCCCCCCCCQQQQQQYYYYYYYYYYYYIIIIIIIIOOOOOHHFFFFFFFFFFFFFFFBBBBBBBBBQCQQQQQQQQXXXJJKKOOQQQQQQQQQQQQQHHHHHHHHHH
+PPPPYYYYYYYYYOOOOOOIEIIIIZZZCCCCCCCCCCCCCQQQQQQQPYYYYYYYYBYBIIIIIIIOOOOOIHHFFFFFFFFFFFFFFBBBBBBBBBBQQQQQQQQQXXXKKKKKKKKKKKQQQQQHHHHHHHHHHHHH
+PPPYYYYYYYYYYOOOOOOIIIIIIZZZCCCCCCCCCCCCCQQQQQQPPPYYYYYYYBBBIIIIIIIOOOJJIIFFFFFFFFFFFRFFFBBBBBBBBBBBQQQQQQQQXXXKKKKKKKKKKKQQQQQHHHHHHHHHHHHH
+PPPPPYYYYYYYYOOOOOOIIIIIIZZZCCCCCCCCCCCCCMQQQQQQQYYYYYYYYYYBBIIIIIIOOOOOOFFFFFFFFFFRRRFBBBBBBBBBBBBBBBQQQQQQQXKKKKKKKKKKKKQQQKQKHHHHHHHHHHHH
+PPPPPYYYYYYYYIIIIIIIIIIIIIZZCCCCCCCCCCCCCCCCCCCCCGGYYYYYBBBBIIIIEEIIOOOOODFFFFFFVBBRRRRBBBBBBBBBBBBBWBQQQQQQQQIIIKKKIKKKKKKKKKKKDDDDDDHHHHHH
+PPPPYYYYYYYYYIIIICIIIIIIIIIZCCCCCCCCCCCCCCCCCCCCCGGYYBBBBBBIIIEEEEEEOOOOOFFFFFFBBBBBRRBBBBBBBBBBBBBBWWWWQQQQPQIIIIIIIKKKKKKKKKKKKKDDDDHHHHHH
+PPPYYYYYYYYYYICIICCIIIIIIIZCCCCCCCCZZZCCCCCCCCCCCYYYYBBBBBBBIIEEEEEEOOOOOEEFFFFCBBBBRRBBBBBBBBBWWWWWWWWWQWWIIIIIIIIIPIKKKKKKKKKKKKDDDDDHHHHH
+PPPPYYYYYYYZYZCCCCIIIIIIIIZZCCCCCCCZZZCCCCCCCAQQAGLYBBBBBBBBBBEEEEEEOOOOOEEEFFWBBBBBBBBBBBBBBBBBWWWWWWWWWWIIIIIIIIIIIIIKKKKKKKKKKDDDDDDDDHHH
+PPPPYYJJYZZZZZCCCCIIIIIIIIIFZZZZZZZZZZCCCCCCCAAAAGGGGGGBBBBBBBEEEEEEOOOOOEEEEFWWBBBBBKKBKKBBBBBWWWWWWWWWWWWIIIIIIIIIIIKKKKKKKKKKKDDDDDDHHHHH
+PPZPPYJJYZZZZZZCCCCIIIIIFIIFFBFFZZZZAACCCCCCCAGAGGGGGGGGGBBBBEEEEEEEOOOOOEEEEWWHZZZBBWKKKKKBBWWWWWWWWWWAWWWWIIIIIFIIIIKKKKKKKPKKKDDDDNDHHHHH
+ZPPPPPZZZZZZZZZCCCCCCUIIFIIFFFFOOZZZAAACCCCCAAGGGGGGGGGGBBBBBEEEEEEEOOOOOEEEXHHHZWWWWWKWWKKWWWWWWWWWWWAAAWWWIIIIIFFIKKKFFFKPKPKKKKDDDDHHHHHH
+ZZZPZZZZZZZZZZZCIIRCUUUIFFFFFFFOFBZAAAACCCCCAAGGGGGGGGGGGGBEEEBEEEEEDEDDEEEEXHHHHHHWWWWWKKKKWWWWWWWWWWAAARRWIIIIFFFIFKFFFFPPPPKKKKKPHHHHHHHH
+ZZZZZZZZZZZZZZZIIIIIUUUFFFFFFFFFFZZZNANCCCCCAGGGGGGGGGGGGGBBBBBEEDDDDDDDDEEEEEHHHHHWWWWWWKWWWGWWWWWWWWAAARRRIIIIFFFFFFFFFFFPPPKPKKKPPPHHHHHH
+ZZZZZFZZZZZSSZZRIIIIUUUFFFFFFFFFFFFFNNNCCCCCGGGGGGGGGGGGGBBBBBBBDDDDDDDDDDEEEEHHHHWWWWWWWWWWWWWWWWWWAAAAARRRIIIIIFFGFFFFFFFFPPPPKPPPPPPHHHHH
+FFFFFFZZZZZZSSSIIIIIUUUUUUUFFFFFFFWNNNNNNANGGGGGGGGGGGGGBBBBBBBBDDDDDDDDDDDDEHHHHHWWWWWWWWWWWWWWWWWWAAARRRRRIRIIFFFFFFFFFFFWPPPPPPPPPPPHHHHH
+GFFFFFLZZZXZSSSSSSSIUUUUUUUFFFFFFFFFNNNNNNNNNGGGGGGGGGBBBBBBBDBDDDDDDDDDDDDDHHHHHHWWWWWWWWWWWWJJJWAAAARRRRRRRRRIFFFFFFFFFFFWWPPPPPPPPPPPHHHH
+GFFFFFFFFZFQFSSSSSSUUUUUUUUUFFFFFLFYNNNNNNNNGGGGGGGGGGBBBBBBBDBDDDDDDDDDDDDDHHHHHHHWWWWWWWWWWWWWJAAAARRRRRRRRRRQFFFFFFFFFFFFWPPWWPPPPPPPHHHH
+GGFFFFFFFFFFFSSSSSSUUUUUUUUUUFFFZNNNNNNNNNNNUUUGGGGGHIIBBBBBDDDDDDDDDDDDDDDDHHHHHHHWWWWWWWWWWWWUAAAAAAIRRRRRRRQQFFQRFFFFFFFFWWWWWPPPPPPUIISS
+FFFFFFFFFFFFIFSSIIIIUUUUUUUUFFFFINNNNNNNNNNNNNUGGGGIIIIIIIIIDDDDDDDDDDDDDDDHHHHHHHHWWWWWWWWWWWWWCACCCQQQRRRQQQQQQFFRCFFRRFFWWWWWWPPPPPPUUIIS
+QQQFFFFFFFFFIFIIIIIIUIUUUUUUUIIIIIINNNNNNNNBNNUUGGGIIIIIIIIIDDDDDDDDDDDDDOEHEHHHHHHWWWWWWWWWWSWCCAACQQQQQQQQQQQQQQQRRRRRRRRWWWWWWPPPPPPPPIIS
+QQQQFQFFFFFFFFPIIIIIIIUUUUIIIIIIIIINNNNNNNNNNUUUUUIIIIIIIIIIAADDLDDDDDDDDOEEEHHHHHWWWWWWWWWWHHCCCCCCQQQQQQQQQQTTQQRRRRRRRRRWWWWPPPPPPPPPIIIS
+KQQQQQFFFFFFFFFIIIIIIIUUUUIIIIIIIIINNNNNNNNNNUUUUUUIIIIIIIIIADDDLDDDDXXEEEEEEHHHHHHHWWRQQQHHHHCCCCCQQQQQQQQQQTTTTTRRRRRRRRRRPPPPWPPPPPPIIIII
+KKKQSSSSFFFFFFFIIIIIIIUIIIIIIIIVIIIVVVNNNNNNNNUNUUUIIIIIIIIDDDDDLDXDDXXEEEEEEEHHHHHHWRRQQQHHHHCCCCCQQQQQQQQQQTTTTRRRRRRRRRSSSPPPPPPPPIIIIIII
+SKVSSKSSALLLNLLRIIIIIIIIIIIIIIIVVVVVNNNNNNNNNNNNUUUIIIIIWWDDDDDDDDXXXXXEEEEEEEEHHHHHHRRQQQHHHHHHHCCCQQQQQQQQQTTTTRYRRRRRRRSSSSSSPPPPPIIIIIII
+SSSSSSSSLLLLLLLRIIIIIIIIIIIIIIIVVVVVVVNVNNNNNNNUUUUIIIIIDDDDDDDDDDDXDXXEEEEEEEESAHHHHRRQQQQQHHHHHHHHHHHQQQQQQTTTTYYYRRRRRRSSSLLLPPPIIIIIIIIW
+SSSSSSSSLLLLLLLLIIIIIIIIIIIIIVVVVVVVVVVVNNNNNNNNNUUIIILDDDDDDDDDDDDDDDDEEEEEESSSSQQIFFFFFFFFUHZHHHHHNNHQQTQTTTTTTYYYYRRVLLLLLLLLBIIIIIIIIIIW
+WWWSSSSSLLLLLLLLINNIIIIIIIIIVYVVVVVVVVVVNNNNNNNNUUUUUUUBBDVDDGDDDDDEEEDEEEEESSSSSQQQFFFFFFFFQZZZZHHHHNNNTTTTTTTTYYYYYRRLLLLLLLLLBBIIIIIIIIIW
+WWSSSSSSSSLLLLLNISNIIIIIIIIIVVVVVVVVVVVVVNNANNNNNUUUUUULLMLDDGGDDDDEEEEEESSSSSSSQQQQFFFFFFFFQQZZHHHNNNNTTTTTTTTHHYSYYYYLLLLLLLLLBIIIIIIIIIII
+WWWSSSSSSSSSSSNNNNNNIIIIIVVVVVVVVVVVVVVVAAAANNNNNUUUUUUULLLDDDLLDDDDEEEEESSSSSSSSSQQFFFFFFFFFFFZZZHNNNNTTTTTTTTHYYYYYYYLLLLLLLLLBIIIIIIIIIIX
+WWWSSSSSSSSSSSNNNNNIIIIIIVVVVVVVVVVVVVVVAAANNNNTTTUUUUULLLLLLLLNDDDDMEESSSSSSSSSSQQQFFFFFFFFFFFZJJJJNNNNNTTTTFFFFYYYYYYLLLLLLLLLLLBIXIIIIIXX
+WZWZSSSSSSSSSSNNNNNNIIIIIVIVVVVVVVVVVVVVAAAAANNTUUUULLLLLLLLLLLLQDLDEEESSSSSSSSSSQQQFFFFFFFFFFFJJJJNNNFFNTTTTFFFFKKYYYYRLLLLLLLLTTTIIHHIIMMX
+ZZZZSSSSSSSSNNNNNNNNIIIIIIIIVVVVVVVVVVVVAAAAETTTQUUUULLLLLLLLLLLLWLLEEESSSSSSSSSSQQQFFFFFFFFFFFJJJJJJJFFFFFFFFFFKKKYYYRRRLLLLLTTTTTHHHHIMMMM
+ZZZZSSSSSCCCNNNNNNNNNIIIIIIIVIVVVVVVVVAAAAAEETTTQQUUULLLLLLLLLLLLLLLEESSSSSSSSSSSQSQFFFFFFFFFFFFFFFJJWFFFFFFFFFFKKKKYRRRRRLLLLTSTTTTHHHHMMMM
+ZZZZSSSCCCCCYNNNNNNNNIIIIIIIIIVVVVVVAAAAAEEEETTQQQUUULLLLLLLLLLLLLLLEEQSSSSSSSSSSSSQFFFFFFFFFFFFFFFJJFFFFFFFFFFKKKKKKRRRRRLLLLTTTUTTTHMMMMMM
+ZZKKCCCCCCCCCCNNNNNNIIIIIIIIIIIIRVVVVAAAAAEEEEEEEQUQLLQLLLLSSSSLLQQLQQQSSSSSSSSSSSSCFFFFFFFFFFFFFFFTJTFFFFFFFFPFKKKKKKRRRLLLLLLLTUTTTHHMMMMM
+KKKKCCCCCCCCCCNNNNNNIIIIIIIIIIIIIIAAAAAEEEEEEEEEEQQQQQQLLLLLESSSSQQLQQQSSSSSSSSSSSSSFFFFFFFFFFFFFFFTTTTFFFFFFFFFFKKKRRRRRRLLLLLLTTTTTTHHMMMM
+UKKKCCCCCCCCCNNRYYIIIIIIIIIIIIIIIIAAAAAEOEEEEEEEEEQQQLLLLLLLESSSQQQQQQQQSSSVSSSSSSSJFFFFFFFFFFFFFFFTTFFFFFFFFFFFKKKKKRRRRRLLLLLLLLTTTTHHMMMM
+UKKCCCCCCCCCCCNCYYIIIIIIIIIIIIIIIIAABAAAEEEEEEEEEQQQQQLLLLLLEEQQQQQQQQQQSSVVSSSSSSSSFFFFFFFFFFFFNNNNTNNFFFFFFZKKKKKKKRRRRLLLLLLLLLTTTTHHMMMM
+UKKCCCCCCCCCCCCCYYIIIIYYYYYIIIIIAAABBBBEEEEEEEEEQQQQSSLLLESSEQKQQQQQQQQQSVVVVSSSSPPSFFFFFFFFFFFFNNNNANNNFFFFFFKKKKKKKIIRILBULLLLLLTTMMMMMMMM
+UKKKCCCCCCCCCCYYYYYIIIYHYYYYYYIAAAABBBBBEEEEEEQQQQQQSSSSSSSSEQQQQQQQQQQQQQVVQPPPPPSSSYFFFFFFFFFFNNNNNNNNNNFFFFKKKKKKKIIIIIUUUULUTTTTTTMMMMMM
+UUKKKCCCCCCCCYYYYYYIYIIHHHYAAAIAAAABBBBBBEEEEEEESSSSSSSSLLSSQQQQQQQQQQQQQQQQQPPPPPSYYYYJFFFFFFFFNNNNNNNGNMMMFFKKKKKKIIIIIIUUUUUUUTTTTMMMMMMM
+UKKCCCCPCCCSSYYYYYYYYYYHHFAACAAAAAAABBBBBEEEDDSSSSSSSSSSLSSSHVQQQQQQQQQQQQQQQQQPPPYYYYEEEEEJJJJNENENNNNNNMMMMFKKKKKKIIIIUUUUUUUUUTUTMMMMGMMM
+UKKKKKCCCCCYYYYYYYYYYYYHHHAAAAAAABBBBBBBBEEBSSSSSSSSSSSSSSSHHVQQQQQQQQQQQQQQQQQPPPYYYYYEEEEEEEEEENENNNNNNMMMMMKKKKKKIEEIIUUUUUUUUUUUDMMMGMMZ
+UKKKKKKKCCCAAAYYYYYYYYYHHHTAAAAAAAABBBBBBBBBBBBSSSSSSSSSSSSVVVQQQQQQQQQQQQQQQXXPPYYYYYYHEEEEEMEEEEEENNNNNMMMMKKKKKIIIEEEEUUUUUUUUUUUMMMMMMMZ
+KKKKKKKKTTCCCYYYYYYYYYHHHAAAAAAAAAJJBBBBBBBBBBBBSSSSSSSSSSSSVVQQQQQQQQQQQMQDQXXPYYYYYYEEEEEEEEEEEEEENNNNMMMMMMMMKKEIEEEEEEEPUUUUUMMMMMMMMZZZ
+KKKKKKKTTTMMKBYYYYYYYYHHHHHAAAAAAAJJBBBBBBBBBBSSSSSSSSSSSSSVVVVVQQQWQQQQMMXDQXXPYYYYYYYYEEEEEEEEEEEENNMMMMMMMMMKKKEEEEEEEEEEUUZUIMMMMMMMMZZZ
+KKKKKKTTTTTMKKYYYYHHHHHHHHHUAAAAAAJJBBBBBWWBBSSSSSSSSSSSSSVVVVVVQTQWQMMMMMXXQXXXXYYYYYEEEEEEEEEEEEEENNNNMMMMMMMKRKEEEEEEEEEEUZZZMMMMZMMMZZZZ
+KKTTTTTTTTTTKKYYKKKKKHBHHHHZLAAAAAAJJBBBNWWWRWWSSSSSSSSVVVVVVVVVVVVVQMMMMXXXXXXXPXXYYYYYEEEEEEEEEEENNNNNMWMMMMSSRRREEEEEEEEZZZZZZMMMZMMMMZZZ
+KKTTTTTTTTTTKKKKKTKKKHBHHNZZLLLAAAJJJJBJWWIWWWWWSSSSSSSVVVVVVVVVVVVMMMMMMXXXXXXXXXXXYYYYEEEEEEEEEEEEEWWWMWWMMMSSRSSSEEEEEEEEZZZZZZMZZZMZZZZZ
+TTTTTTTTTTTTJTTTTTTKKKKHHHZZZZLAAAAAAJJJJWWWWMMMMSSSSSVVVVVVVVVVVVVMMMMXXXXXXXXXXXXXYYYYYYEEEEEEEOWWNWWWWWWWWMSSSSSQESEEEEEEZZZZZZZZZZZZZZII
+TTTTTTTTTTTTTTTTTTTKKKKKHHZZZAAAAAAJJJJJWWWWWMMMMSSSSSSVVVVVVVVVVVVVMMMMXXXXXXXXXXXXYYYYYIIIIEIHEOWWWWWWWWWMMMSSSSSSSSSEEEEEYYZZZZZZZZZZZIII
+TTTTTTTTTTTTLTTTTTTKKKKKKKKKAAAAAAAAAJJJJJWWWMMMMSSSSSSSVVVVVVVVVVVVVMMXXXXXXXXXXXXXXYYYIIIIIIIWWWWWWWWWWWWMMMSSSSSSSSSEEEDEYYYYZZZIIIIIZIII
+TTTTTTTTTTTTTTTTTTTKKKKKKKKAAAAAAAAAJJJJWWWWWMMMMSSSVSSVVVVVVVNVVNNNVMMXXXXXXXXXCXYXXYYIIIIIIIIIWWWWWWWWWWWWMMMSSSSSSSSEEYDYYZZZZZIIIIIIIIII
+TTTTTTTTTTTTTTTTTTTTTKKKKKKAAAAAAAAAWWWWWWWWWMMMMCVVVVVVVVVVVNNNNNNNXNNXXXXXXXXXYYYYYYYIIIIIIIIIGWWWWWWWWWWWMMSSSSSSSSSYYYYYYKKZZIIIIIIIIIII
+TTTTTTTTTTTTTTTTTTTTTKKKKKKKKAAAAAAAWWWWWWWWWMMMMCVVVTVVVVVVVNNNNNNNNNNKKXXXXXXXYYYYYYIIIIIIIIIIWWWWWWWWWWWWSSSSSSSSSSSZZYYYYYYZJIIIIIIIIIII
+TTTTTTTTJTTTTTTTTTTTTTYKKKKKKAAAAAAAWWWWWWWWWMMMMWVVVTVVVNVVNNNNNNNNNNNNKXXXXXYYYYYYYYYYIIIIIIIIWWWWWWWWWWWWSSBSSSSSSZSZZZYZYYZZIIIIIIIIIIII
+ZTZTTTTTTTTYYTTTTTTTAAYKKKKKKAAAAAAWWWWWWWWWWMMMMMMMMMMMMMVVNNNNNNNNNNKKKXXXKKYYYYYYYYYIIIIIIIIIIIWWWWWWWWWWSASSSSQSZZZZZZYZYZZZZIIIIIIIIIII
+ZTZTTTAYYYYYYTTTTTTTTYYYYTTAAAAAAAAWWWWWWWWWWMMMMMMMMMMMMMNNNNNNNNNNNNNKKKKKKKKYYYYYYYYKIIIIIIIIIIWWWWWWWWNWAASSSSSSZZZZZZYZZZZZZIIIIDIIIIII
+ZZZZTHAAAYYAYYTTTTTTTTYYYYYUUAAAAAAUWWWWWWWWWMMMMMMMMMMMMMNNNNNNNNNNNNNKKKKKKKKYYYYYYYKKKIIIIIIIIIWWWWWGNNNNNNSQSSZZZZZZZZZZZZZZZZIIDDIIIIII
+ZZZZZZAAAAYAYYYYTTTTTTYYUUUUUUAUUUUUWWWWWWWWWMMMMMMMMMMMMMNNCNNNNNNNNKKKKKIIIKIIIYYYYYYYKIIIIIIIIWWWWWWWNNNNNNPPSSPPZZZZZZZZZZZZZZZDDDIIIIII
+ZZZZZAAAAAAAAAYTTTTTYYYYYUUUUUAUUUDUWWWWWDWWWMMMMMMMMMMMMMNNNNNNNNNNNKKKKIIIIIIIIIRYYYYKKIIIIIIIINWUWIWNNNNNNNNPPPPPZZZZZZZZZZZZZZDDDDDIIIII
+ZZZZZAAAAAAAAAAANTTTTYYYYYUUUUUUUDNNNNDDDDWWDMMMMMMMMMMMMMTTNNNNNNNNNKKKKIIIIIIIIIIIYYKKKKIIIIIINNNNIIIINNNNNNPPPPPPPPZZZZZZZZZZZZDDDDDDIIII
+ZZZZZAAAAAAAAAAAAJJTTYYYYUUUUUUUAAAAAAAAADDDDMMMMMMMMMMMMMTTNXXXNNNNRKKKKKIIIIIIIIIIJYYKKKKIIIINNNNNXXXIINNJJNPPPPPPPZZZZZZZZZZZZDDDDDDDDIII
+ZZZZZAAAAAAAAAAAAYYYYYYYYUYYUUUUAAAAAAAAAAADDMMMMMTTTTTTTTTMMXXXXNNNRRKKRROIIIIIIIBBYYYKGKIIIINNNNNNXXXXNNJJJNPPPPPPPZZZZZZZZZZZDDDDDDDDDDII
+ZZZZZAAAAAAAAAAAAAYYYYYYYYYYUUULAAAAAAAAAAADRMMMMMMTTXXTXTTTPPXVVNNNRRRKRIIIIIIIIIBGGGGGGKIIIBNNNNNXXXXXXNNJXNPPPPPPPPPPPPSSZSSZSDDDDDDDDDII
+ZZZZZAAAAAAAAAAAAAAAYYYYYYYLLLLLUDNNNNNAAAADURRRRMMTTTXXXTMTBPPPPPRRRRRRRRIIIIIIIIBGGGGGKKKIIBBNNNXXXXXXXXXXXPPPPPPPPPPPSYSSSSSSSUDSDSDDIIII
+ZZZZAAAAAAAAAAAAAAAAYYYYYYYYLLLLLDNNNNNAAAADURRRRRMTTXXXTTTPPPPPPPVRRRRRRRRLIIIIIIIGGGGGKKNYIBBNNNNEXXXXXXXXXPPPPPPPPPPSSSSSSSSSSUDSSSIIIIII
+ZZZZZAAAAAAAAAAAAAAXYYYYYYYYYLNNNNNNNNNAAAARRRRRRRRRXXXXXTTPPPPPPRRRRRRRRRRLLIIIIIIGGGGKKNNYNNNLNNNXXXXXXXXXXPPPPPPPPPPPPSSSSSSZZZZZIIIIIIII
+ZZZZZAAAAAAAAAABBBAXYYYYYYYYLLNNNNNNNNNAAAAAAARRRRRRRXXXXPPPPPPPPRRRRRRRRRRLLIIIINIGGGSKSXNNNNNNNKKXXXXXXXXXXPPPPPPPPPPPKSSSSSSZZZZZZIIIIIII
+ZZZZZZZZEAAAABBBBYYYYYYYYYYLLLNNNNNNNNNAAAAAAARRRRRXXXXXXXPPPPPPPRRRRRLMRRLLLLLIINNGGSSSSSNNNNNNKKKXXXXXXXXXXPPPPPPPPPPSKSSSSSSZZZHHHLIIZIIU
+ZZZZZZZZEEEEAABBYYYYYYYYYLLLLLNNNNNNNNNAAAAAAARRRRRXXXXXXXXPPPPPPRRRRRLLLLLLLLLLLLLLLLSSSANNNNNNNKKXXXXXXXXXPPPPPPPPPPPSSSSSSSSZZHHHHHHIHHIH
+ZZZZZZZEEEEEEBBBYYYYYYYYYLLYRLNNNNNNNNJAAAAAAARRXXRXXXXXXXXXPPPPPRRRRRRRLLLLLLLLLLLLOSSSSANNNNKKKKKKKKXXXXXPPPQQPPPPPIISSSISSSSSZHHHHHHHHHHH
+ZZZZZZEEEEEEGGBBYYYYYYYYYYYYRRNNNNNNAAAAAAAAAAXXXXXXXXXXXXXXXXPPPPRRRRRRRLLLLLLLLLLLLRRNNNNNNNNKKKKKKXXXXKKPPPQQQPPPPIIIIWISSBSSSSSHHHHHHHHH
+ZZZZZZEEEEEEGYYYYYYYYYYYYYYYRRNNNNNNAAAAAAAJRXXXXXXXXXXXXXXXXXPPPRRRRRLRRLLLLLLLLLLLLLLKNNNNNNNNKKKKKKKKXKPPPQQQQQQQPIIIIIIIIBSSSHHHHHHHHHHH
+ZZZEEEIEEEGGGGGYYYYYYYYYYYYYRYYRRJJJAAAAAAAWXXXXXXXXXXXXXXXXXXXPPRRRRRLLRLLLLLLLLLLLLLKKNNNNNNNNKKKKKKKKKKKQQLQQQQQQPIIIIIIIIBBBSHHHHHHHHHHH
+ZZZZZEEEEEGGGGGYYYYYYYKKKKYYYYYRRRJJAAAAAAAAAAXXXXXXXXXXXXXXXXJPRRRRROOLLLLLLLLLLLLLKKKKKNNSNNKKKKKKKKKKKEEQQQQQQQQQQIIIIIIIIIIIIHHHHHHHHHHH
+ZZZZZEEEEEZZGGGGYGYYYYKKKKKKKKRRRRJJAAAAAAAAAAQNNXXXXXXXXXXXBXJPBRRROOOOOQQQQLLLLLLKKKKKKNNNNNKKKKKKKEEEKEEEQQQQQQQQQIIIIIIIIIIIIIIHHHHHHHHH
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Inputs/Day14.txt

@@ -0,0 +1,500 @@
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Inputs/Day15.txt

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+
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Inputs/Day17.txt

@@ -0,0 +1,5 @@
+Register A: 44348299
+Register B: 0
+Register C: 0
+
+Program: 2,4,1,5,7,5,1,6,0,3,4,2,5,5,3,0

Inputs/Day19.txt

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+#...#.###...#...#...#.........#.#.#.#.#.....#...#.....#...#...#.....#...#...#.#.#.#...#...###...#.#.....#.#...#.#.........#.....#...#...#...#
+#.###.###############.#########.#.#.#.#####.#.#########.#.#########.###.#.#.#.#.#.#.###.#######.#.#.#####.#####.#################.###.#.#.#.#
+#.....#...#...........#.......#.#.#.#...#...#...#...#...#.#.........#...#.#.#.#...#...#.###...#...#.#.....#.....#...#...........#.....#...#.#
+#######.#.#.###########.#####.#.#.#.###.#.#####.#.#.#.###.#.#########.###.#.#.#######.#.###.#.#####.#.#####.#####.#.#.#########.###########.#
+#.....#.#.#...#...#...#.###...#.#.#.#...#.#.....#.#.#...#.#.....#...#.....#.#.#.......#.....#.#.....#.....#...#...#.#.........#...#.........#
+#.###.#.#.###.#.#.#.#.#.###.###.#.#.#.###.#.#####.#.###.#.#####.#.#.#######.#.#.#############.#.#########.###.#.###.#########.###.#.#########
+#...#...#.....#.#.#.#.#.#...#...#.#.#...#.#.#...#.#.#...#.#...#...#.......#.#.#...#...#...#...#...#...#...#...#.#...#...#...#...#.#.........#
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+###.............#...#...#.....###...###...#...#...#...###...#.............#...###...#...#...#####...#...###.....#.....#...#.....#...........#
+#############################################################################################################################################

Inputs/Day21.txt

@@ -0,0 +1,5 @@
+029A
+980A
+179A
+456A
+379A

Inputs/Day24.txt

@@ -0,0 +1,313 @@
+x00: 1
+x01: 0
+x02: 1
+x03: 1
+x04: 0
+x05: 0
+x06: 1
+x07: 1
+x08: 0
+x09: 1
+x10: 1
+x11: 1
+x12: 1
+x13: 1
+x14: 0
+x15: 1
+x16: 0
+x17: 1
+x18: 0
+x19: 1
+x20: 1
+x21: 0
+x22: 0
+x23: 0
+x24: 1
+x25: 1
+x26: 1
+x27: 0
+x28: 1
+x29: 1
+x30: 1
+x31: 0
+x32: 0
+x33: 1
+x34: 1
+x35: 0
+x36: 0
+x37: 0
+x38: 1
+x39: 0
+x40: 0
+x41: 0
+x42: 0
+x43: 1
+x44: 1
+y00: 1
+y01: 0
+y02: 0
+y03: 1
+y04: 1
+y05: 0
+y06: 0
+y07: 0
+y08: 0
+y09: 0
+y10: 0
+y11: 1
+y12: 0
+y13: 0
+y14: 0
+y15: 0
+y16: 1
+y17: 0
+y18: 0
+y19: 1
+y20: 0
+y21: 1
+y22: 0
+y23: 1
+y24: 0
+y25: 0
+y26: 1
+y27: 0
+y28: 0
+y29: 1
+y30: 0
+y31: 0
+y32: 0
+y33: 1
+y34: 0
+y35: 0
+y36: 0
+y37: 1
+y38: 0
+y39: 0
+y40: 1
+y41: 0
+y42: 1
+y43: 1
+y44: 1
+
+x44 XOR y44 -> drc
+phq OR frm -> hjs
+vdh AND nwn -> gqd
+y40 XOR x40 -> vkn
+x21 XOR y21 -> cnb
+cnb AND wmb -> vvk
+dfb XOR bfn -> hbk
+bhd XOR mmh -> z06
+fkc XOR bwj -> z22
+gnj AND jfw -> spq
+dwh AND kqn -> fhp
+x19 AND y19 -> kkg
+drc XOR qqt -> z44
+fkc AND bwj -> jbb
+y32 XOR x32 -> qwt
+y37 AND x37 -> kgg
+x07 AND y07 -> dqn
+dsp AND bvp -> hff
+pmv OR pkn -> wmt
+cjf OR pfk -> z45
+hgq XOR phb -> z27
+qnq OR dpc -> djp
+x32 AND y32 -> nbb
+qwt AND jqm -> fdk
+x18 XOR y18 -> grp
+vkf OR hdm -> kqn
+cqv AND jss -> bwd
+x00 AND y00 -> jfw
+cjb XOR srm -> z19
+jss XOR cqv -> z35
+ntt OR spq -> ndd
+cqm XOR qqj -> z43
+x01 AND y01 -> ntt
+y14 XOR x14 -> dfb
+nbk XOR wrk -> z05
+dvw AND rpg -> z23
+vvc OR kcv -> qqj
+bqc XOR fwr -> z26
+dwh XOR kqn -> z41
+x15 XOR y15 -> bkb
+rjm XOR gjr -> z24
+x22 XOR y22 -> bwj
+y22 AND x22 -> hpj
+x08 XOR y08 -> hnf
+y27 AND x27 -> frm
+wrw OR swr -> fds
+gtm AND rmt -> mkv
+kdh AND qvq -> ghr
+fgv AND mfm -> kcv
+hnf AND gqs -> pmv
+kkg OR qvs -> vdh
+fdk OR nbb -> rmt
+y29 AND x29 -> cwd
+hjk OR bts -> vkg
+vtk AND npm -> tqb
+dvw XOR rpg -> dbb
+y39 XOR x39 -> mnm
+y05 XOR x05 -> wrk
+djd AND fds -> dqt
+tvh OR sqm -> npm
+cdr XOR cmt -> z10
+x28 XOR y28 -> hgd
+x33 XOR y33 -> gtm
+mnm XOR vhv -> z39
+fbv XOR bwg -> z38
+hqs AND nhr -> vbt
+kth OR qcp -> hgq
+wjj OR scs -> bfn
+bkv OR vvk -> fkc
+cmt AND cdr -> pph
+dqt OR gqb -> bqc
+y35 XOR x35 -> jss
+vkb OR krd -> cdr
+mqf AND cvh -> trj
+x36 XOR y36 -> dsp
+y41 XOR x41 -> dwh
+y38 XOR x38 -> bwg
+ghr OR tpc -> jqm
+ckn XOR hqq -> z07
+vkn AND vkg -> vkf
+y28 AND x28 -> wkc
+x31 XOR y31 -> qvq
+rjm AND gjr -> swr
+gcb OR dbb -> rjm
+y18 AND x18 -> z18
+y24 AND x24 -> wrw
+x17 XOR y17 -> kbh
+y24 XOR x24 -> gjr
+x26 XOR y26 -> fwr
+y43 AND x43 -> bvm
+y15 AND x15 -> sbt
+y12 XOR x12 -> fvh
+kvn OR ffb -> cjb
+y31 AND x31 -> tpc
+y37 XOR x37 -> bnh
+y11 AND x11 -> scv
+hgd AND hjs -> phr
+jfw XOR gnj -> z01
+fvh XOR sfk -> z12
+fds XOR djd -> z25
+qwt XOR jqm -> z32
+bvp XOR dsp -> z36
+phr OR wkc -> jdq
+y07 XOR x07 -> hqq
+y43 XOR x43 -> cqm
+bnh XOR kss -> z37
+trg OR vbt -> kdh
+cwd OR pkc -> nhr
+y19 XOR x19 -> srm
+dkd AND jdq -> pkc
+wrk AND nbk -> fnk
+hjs XOR hgd -> z28
+rnt AND qbs -> rcp
+djp XOR mft -> z03
+cht OR mkv -> mqf
+hbk XOR bkb -> z15
+x44 AND y44 -> pfk
+x26 AND y26 -> qcp
+ndd XOR jgw -> z02
+x06 AND y06 -> dhs
+ckn AND hqq -> cpt
+y13 AND x13 -> wjj
+x10 AND y10 -> tvr
+ffr OR gqd -> wmb
+y09 XOR x09 -> tjb
+nhr XOR hqs -> z30
+hgq AND phb -> phq
+x00 XOR y00 -> z00
+y16 AND x16 -> prt
+dqn OR cpt -> gqs
+x23 AND y23 -> gcb
+mft AND djp -> tvh
+bkb AND hbk -> qtw
+kfk AND chk -> vgb
+vhv AND mnm -> hjk
+y42 XOR x42 -> mfm
+x25 XOR y25 -> djd
+fgv XOR mfm -> z42
+grp XOR fgr -> kvn
+x16 XOR y16 -> chk
+x09 AND y09 -> krd
+cqb OR rmg -> mqm
+y30 XOR x30 -> hqs
+kss AND bnh -> dvf
+y11 XOR x11 -> rnt
+x04 AND y04 -> ptm
+y13 XOR x13 -> cbr
+rnt XOR qbs -> z11
+hff OR fjf -> kss
+x25 AND y25 -> gqb
+kdh XOR qvq -> z31
+y06 XOR x06 -> mmh
+cnb XOR wmb -> z21
+y02 XOR x02 -> jgw
+x17 AND y17 -> hkn
+y34 AND x34 -> cvh
+x27 XOR y27 -> phb
+x42 AND y42 -> vvc
+x03 XOR y03 -> mft
+y35 AND x35 -> nvg
+x10 XOR y10 -> cmt
+y20 AND x20 -> ffr
+x30 AND y30 -> trg
+ptm OR tqb -> nbk
+bfn AND dfb -> sjr
+jgw AND ndd -> qnq
+y39 AND x39 -> bts
+y38 AND x38 -> knq
+npm XOR vtk -> z04
+prt OR vgb -> jqc
+kfk XOR chk -> z16
+rvd OR dhs -> ckn
+fnk OR wkv -> bhd
+y03 AND x03 -> sqm
+x08 AND y08 -> pkn
+y02 AND x02 -> dpc
+bwg AND fbv -> pdw
+mqf XOR cvh -> z34
+tjb AND wmt -> vkb
+jdq XOR dkd -> z29
+x34 XOR y34 -> tfn
+y21 AND x21 -> bkv
+tfn OR trj -> cqv
+fgr AND grp -> ffb
+bwd OR nvg -> bvp
+cjv OR hkn -> fgr
+fhp OR rnc -> fgv
+sjr OR tck -> z14
+vkn XOR vkg -> z40
+kbh XOR jqc -> z17
+kgg OR dvf -> fbv
+tjb XOR wmt -> z09
+tvr OR pph -> qbs
+qqj AND cqm -> gsg
+pdw OR knq -> vhv
+gqs XOR hnf -> z08
+y20 XOR x20 -> nwn
+kbh AND jqc -> cjv
+bqc AND fwr -> kth
+rcp OR scv -> sfk
+sbt OR qtw -> kfk
+bhd AND mmh -> rvd
+nwn XOR vdh -> z20
+y29 XOR x29 -> dkd
+y23 XOR x23 -> rpg
+jbb OR hpj -> dvw
+cbr XOR mqm -> z13
+y33 AND x33 -> cht
+y12 AND x12 -> rmg
+mqm AND cbr -> scs
+sfk AND fvh -> cqb
+y14 AND x14 -> tck
+x04 XOR y04 -> vtk
+y05 AND x05 -> wkv
+rmt XOR gtm -> z33
+y01 XOR x01 -> gnj
+srm AND cjb -> qvs
+x36 AND y36 -> fjf
+drc AND qqt -> cjf
+y40 AND x40 -> hdm
+y41 AND x41 -> rnc
+gsg OR bvm -> qqt

Inputs/Day3.txt

@@ -0,0 +1,6 @@
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Inputs/Day8.txt

@@ -0,0 +1,50 @@
+.....wV....q.....................................n
+.......w......q.h.....Vn.........................D
+............w.S..G.....................DT.........
+......S........h......e..T.....y......D...........
+......m.......Ae.......T........o.................
+....m....S........................................
+...m..........................n........8..........
+.........2...G......................n.............
+..2........V.......h................Q.............
+............................o.....................
+.Z......I..U....e...u.....G....o..................
+...N..G.........................................y.
+.....I............q.......h...................s...
+......U........qI....o.V..Rz........8........k....
+......d.Z.........................R.......8y......
+.........e..............T.....l...................
+.......2.........................u...R............
+.....d.............................Q..............
+...................v.....................s.Q....M.
+........2..........4.....................8..7.k...
+...........x..N..................A..........k.....
+...........ZN...........v...............K.........
+...d.......N.....................Ky.6.............
+...........................l6.....................
+....L....g.................4.......k..K.......0...
+..............L...........4R................s.....
+U......r..............H.4.........................
+.......U.............a.......H.............u......
+......xY...............l..........................
+...................................6..u...........
+........Y......L......l............0..............
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+..................v........6.EX.............z.....
+d..Y.............m......A.........................
+......................a.i......M...........z......
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+..........3................W........E...i...0.....
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+....................................7....5........
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+t..............3.x.....9..........W.M.............
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+Z.............x................X.i......5.........
+...........3.....................................1
+...................O.......s....X.................
+..............r...................................
+..........................O.................1.....

Program.cs

@@ -25,6 +25,19 @@ var selectedDay = AnsiConsole.Prompt(select);
 
 var stopWatch = new Stopwatch();
 
+// Read input
+try
+{
+    selectedDay.ReadInput();
+}
+catch (Exception e)
+{
+    AnsiConsole.WriteException(e);
+
+    Environment.Exit(1);
+}
+
+// Part 1
 AnsiConsole.MarkupLine($"[cyan]Running [yellow]{selectedDay}[/]...[/]\n");
 
 AnsiConsole.MarkupLine("[cyan]Part [yellow]1[/] result:[/]");
@@ -44,7 +57,9 @@ catch (Exception e)
 
 stopWatch.Reset();
 
+// Part 2
 AnsiConsole.MarkupLine("\n[cyan]Part [yellow]2[/] result:[/]");
+
 try
 {
     stopWatch.Start();

StringExtensions.cs

@@ -14,4 +14,25 @@ public static class StringExtensions
     {
         return new StringReader(text).ReadAllLines();
     }
+
+    public static char[,] AsCharGrid(this string text)
+    {
+        var lines = text.ReadAllLines().ToArray();
+        var lineCount = lines.Length;
+        var columnCount = lines[0].Length;
+
+        var grid = new char[lineCount, columnCount];
+
+        for (int i = 0; i < lineCount; i++)
+        {
+            var line = lines[i];
+
+            for (int j = 0; j < columnCount; j++)
+            {
+                grid[i, j] = line[j];
+            }
+        }
+
+        return grid;
+    }
 }