part one complete

AdventOfCode2025/Laboratories.cs

@@ -1,9 +1,32 @@
-namespace AdventOfCode2025;
+using AdventOfCode2025.Utils;
+
+namespace AdventOfCode2025;
 
 public class Laboratories : IAdventSolution
 {
     public AdventSolution Solve(string input)
     {
-        throw new NotImplementedException();
+        var lines = input.SplitLines();
+        var start = lines[0].IndexOf('S');
+        var splitters = new HashSet<Coordinate>();
+        var origin = new Coordinate(start, 0);
+        Traverse(lines, origin, splitters);
+        return new AdventSolution(splitters.Count.ToString(), null);
+    }
+
+    private void Traverse(string[] map, Coordinate start, HashSet<Coordinate> splitters)
+    {
+        if (start.X < 0 || start.X >= map[0].Length)
+            return;
+        
+        for (var y = start.Y; y < map.Length; y++)
+        {
+            if (map[y][start.X] != '^') continue;
+            if (!splitters.Add(new Coordinate(start.X, y))) return;
+            
+            Traverse(map, new Coordinate(start.X + 1, y), splitters);
+            Traverse(map, new Coordinate(start.X - 1, y), splitters);
+            return;
+        }
     }
 }

AdventOfCode2025/Program.cs

@@ -20,5 +20,5 @@ AdventSolver<Cafeteria>.Solve(dayFiveInput, 5, "Cafeteria");
 var daySixInput = await File.ReadAllTextAsync("./Input/DaySix.txt");
 AdventSolver<TrashCompactor>.Solve(daySixInput, 6, "Trash Compactor");
 
-var daySevenInput = await File.ReadAllTextAsync("./Input/Test.txt");
+var daySevenInput = await File.ReadAllTextAsync("./Input/DaySeven.txt");
 AdventSolver<Laboratories>.Solve(daySevenInput, 7, "Laboratories");