Update graph-valid-tree.cpp

kamyu104 · kamyu104 · commit 453ca2958cf4 · 2015-10-03T14:36:02.000+08:00
diff --git a/C++/graph-valid-tree.cpp b/C++/graph-valid-tree.cpp
@@ -1,5 +1,5 @@
 // Time:  O(|V| + |E|)
-// Space: O(|V|)
+// Space: O(|V| + |E|)
 
 class Solution {
 public:
