diff --git a/buggy.py b/buggy.py
--- a/buggy.py
+++ b/buggy.py
@@ -1,5 +1,5 @@
 S = input()
-num = set([i for i in range(1, 10)])
+num = set([i for i in range(0, 10)])
 
 for s in S:
     num.discard(int(s))
