1 files changed, 37 insertions, 0 deletions
diff --git a/2020/10/Program.cs b/2020/10/Program.cs
new file mode 100644
index 0000000..16ef0ff
--- /dev/null
+++ b/2020/10/Program.cs
@@ -0,0 +1,37 @@
+using System;
+using System.IO;
+using System.Linq;
+
+namespace AOC
+{
+    internal class Run
+    {
+        private static int PartOne(int[] data)
+        {
+            int prev = 0, three = 1, one = 0;
+            for (int i = 0; i < data.Length; i++)
+            {
+                if (data[i] - prev == 3) three++;
+                else one++;
+
+                prev = data[i];
+            }
+
+            return one * three;
+        }
+        
+        private static int PartTwo(int[] data)
+        {
+            return 0;
+        }
+
+        public static void Main(string[] args)
+        {
+            string text = File.ReadAllText(@"C:\Users\bornerma\Desktop\input.txt");
+            string[] numsStr = text.Split('\n');
+            int[] nums = Array.ConvertAll(numsStr, int.Parse).OrderBy(i => i).ToArray();
+            Console.WriteLine(PartOne(nums));
+            Console.WriteLine(PartTwo(nums));
+        }
+    }
+}
+\ No newline at end of file