diff --git a/src/main.cs b/src/main.cs
index b7ae956..afd62e0 100644
--- a/src/main.cs
+++ b/src/main.cs
@@ -1,8 +1,39 @@
-//aoc2021.Day02.Go();
-//aoc2021.Day03.Go();
-//aoc2021.Day05.Go();
-//aoc2021.Day06.Go();
-//aoc2021.Day07.Go();
-//aoc2021.Day08.Go();
-//aoc2021.Day09.Go();
-aoc2021.Day10.Go();
+var arg = args.FirstOrDefault();
+switch (arg)
+{
+    case "1":
+        aoc2021.Day01.Go();
+        break;
+
+    case "2":
+        aoc2021.Day02.Go();
+        break;
+
+    case "3":
+        aoc2021.Day03.Go();
+        break;
+
+    case "5":
+        aoc2021.Day05.Go();
+        break;
+
+    case "6":
+        aoc2021.Day06.Go();
+        break;
+
+    case "7":
+        aoc2021.Day07.Go();
+        break;
+
+    case "8":
+        aoc2021.Day08.Go();
+        break;
+
+    case "9":
+        aoc2021.Day09.Go();
+        break;
+
+    default:
+        aoc2021.Day10.Go();
+        break;
+}