Day 6

Thanks for the reprieve.

advent-of-code-2023.csproj

@@ -40,6 +40,8 @@
 	  <EmbeddedResource Include="inputs\04a.txt" />
 	  <EmbeddedResource Include="inputs\05.txt" />
 	  <EmbeddedResource Include="inputs\05a.txt" />
+	  <EmbeddedResource Include="inputs\06.txt" />
+	  <EmbeddedResource Include="inputs\06a.txt" />
 	</ItemGroup>
 
 	<ItemGroup>

inputs/06.txt

@@ -0,0 +1,2 @@
+Time:        44     70     70     80
+Distance:   283   1134   1134   1491

inputs/06a.txt

@@ -0,0 +1,2 @@
+Time:      7  15   30
+Distance:  9  40  200

src/06.cs

@@ -0,0 +1,67 @@
+namespace aoc2023;
+
+internal class Day06 : Day
+{
+    private List<int> times = new();
+    private List<int> dists = new();
+    private long time = 0;
+    private long dist = 0;
+    internal override void Parse()
+    {
+        var lines = Util.Parsing.ReadAllLines($"{GetDay()}").ToList();
+        var timeline = lines[0].Split(':');
+        times = timeline[1].Split(' ', StringSplitOptions.RemoveEmptyEntries).Select(int.Parse).ToList();
+        time = long.Parse(timeline[1].Replace(" ", ""));
+        var distline = lines[1].Split(':');
+        dists = distline[1].Split(' ', StringSplitOptions.RemoveEmptyEntries).Select(int.Parse).ToList();
+        dist = long.Parse(distline[1].Replace(" ", ""));
+    }
+
+    internal override string Part1()
+    {
+        long total = 1;
+        for (int i = 0; i < times.Count; i++)
+        {
+            long numWins = 0;
+            bool hasWon = false;
+            for (int chargetime = 1; chargetime < times[i]; chargetime++)
+            {
+                var d = chargetime * (times[i] - chargetime);
+                if (d > dists[i])
+                {
+                    hasWon = true;
+                    numWins++;
+                }
+                else if (hasWon)
+                {
+                    break;
+                }
+            }
+
+            total *= numWins;
+        }
+
+        return $"Multiplied number of wins total: <+white>{total}";
+    }
+
+    internal override string Part2()
+    {
+        long numWins = 0;
+        bool hasWon = false;
+        for (int chargetime = 1; chargetime < time; chargetime++)
+        {
+            var d = chargetime * (time - chargetime);
+            if (d > dist)
+            {
+                hasWon = true;
+                numWins++;
+            }
+            else if (hasWon)
+            {
+                break;
+            }
+        }
+
+        return $"Number of wins with correct kerning: <+white>{numWins}";
+    }
+}