day 6 part 1

AdventOfCode/Day06.cs

@@ -0,0 +1,43 @@
+namespace AdventOfCode;
+
+public class Day06 : BaseDay
+{
+    private Race[] _races;
+
+    public Day06()
+    {
+        string[] lines = File.ReadAllLines(InputFilePath);
+        string[] times = lines[0].Replace("Time:", "").Split(" ", StringSplitOptions.RemoveEmptyEntries);
+        string[] distances = lines[1].Replace("Distance:", "").Split(" ", StringSplitOptions.RemoveEmptyEntries);
+
+        _races = new Race[times.Length];
+        for (int i = 0; i < times.Length; ++i)
+        {
+            _races[i] = new Race(int.Parse(times[i]), int.Parse(distances[i]));
+        }
+    }
+
+    public override ValueTask<string> Solve_1()
+    {
+        int result = _races.Aggregate(1, (result, race) => result * GetWaysToWin(race));
+        return new(result.ToString());
+    }
+
+    public override ValueTask<string> Solve_2()
+    {
+        return new("TBD");
+    }
+
+    private int GetWaysToWin(Race race)
+    {
+        int waysToWin = 0;
+        for (int i = 0; i < race.Time; ++i)
+        {
+            int distance = (race.Time - i) * i;
+            waysToWin += distance > race.Distance ? 1 : 0;
+        }
+        return waysToWin;
+    }
+
+    private record Race(int Time, int Distance);
+}