diff --git a/buggy.py b/buggy.py
--- a/buggy.py
+++ b/buggy.py
@@ -9,7 +9,7 @@
 
 
 def solution(nums):
-    MOD = 10**9 + 9
+    MOD = 10**56 + 9
     N = len(nums)
     nums = [x % MOD for x in nums]
     count = Counter(nums)
