Day 13 - Part 1

Day13/Day13.cs

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+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+
+namespace Advent
+{
+    public static class Day13
+    {
+        public static void Execute()
+        {
+            var lines = File.ReadAllLines(@".\Day13\input.txt");
+
+            var game = new IntcodeComputer(lines[0], 0);
+
+            var tiles = new Dictionary<Tuple<long, long>, long>();
+
+            while (!game.Halted)
+            {
+                var x = game.Execute(0);
+                var y = game.Execute(0);
+                var tile = game.Execute(0);
+
+                tiles[new Tuple<long, long>(x, y)] = tile;
+            }
+
+            Console.WriteLine(tiles.Values.Count(t => t == 2));
+        }
+    }
+}