Fix typo

Author: AbdeltwabMF

graph_theory/graph_traversal/breadth_first_search.cpp

@@ -23,12 +23,24 @@ void _clear() {
 void BFS(int src)  {
   memset(dis, 0x3f, sizeof(dis[0]) * (n + 2));
   memset(Par,   -1, sizeof(Par[0]) * (n + 2));
-  wdwadfppfnqkpfigikw;
-  lgfdjklsaigrkf,sdapgkz
-    }
+
+  queue <int> q;
+  q.push(src);
+  dis[src] = 0;
+
+  int u;
+  while(q.size())  {
+    u = q.front(); q.pop();
+    for(int i = Head[u]; i; i = Next[i])
+      if(dis[To[i]] == oo) {
+        dis[To[i]] = dis[u] + 1;
+        Par[To[i]] = u;
+        q.push(To[i]);
+      }
+  }
 }
 
-int main() 
+int main()
 {
   cin >> n >> m >> st >> tr;
   while(m--) {
@@ -40,4 +52,3 @@ int main()
   BFS(st);
   cout << dis[tr] << endl;
 }
-