Update analyze-user-website-visit-pattern.py

kamyu104 · web-flow · commit 6d0cb8d7a321 · 2019-08-12T02:23:57.000+08:00
diff --git a/Python/analyze-user-website-visit-pattern.py b/Python/analyze-user-website-visit-pattern.py
@@ -2,6 +2,7 @@
 # Space: O(n^3)
 
 import collections
+import itertools
 
 
 class Solution(object):
