Update graph-valid-tree.cpp

kamyu104 · kamyu104 · commit 00206aa0e1c8 · 2015-10-24T20:40:10.000+08:00
diff --git a/C++/graph-valid-tree.cpp b/C++/graph-valid-tree.cpp
@@ -7,6 +7,7 @@ class Solution {
         int parent;
         vector<int>neighbors;
     };
+
     bool validTree(int n, vector<pair<int, int>>& edges) {
         if (edges.size() != n - 1) {
             return false;
