diff --git a/2020/template.go b/2020/template.go
index d92496a..184107e 100644
--- a/2020/template.go
+++ b/2020/template.go
@@ -8,7 +8,11 @@ import (
 )
 
 func main() {
-	// step := os.Args[1]
+	step := os.Args[1]
 	values := util.InputParserStrings(os.Args[2])
 
+	switch step {
+	case "1":
+	case "2":
+	}
 }