Update synonymous-sentences.py

kamyu104 · web-flow · commit dcd3ba06af28 · 2019-11-17T04:08:39.000+08:00
diff --git a/Python/synonymous-sentences.py b/Python/synonymous-sentences.py
@@ -3,6 +3,7 @@
 # Space: O(p*l)
 
 import collections
+import itertools
 
 
 class UnionFind(object):
