Fix Typo

Author: lxylxy123456

Graph.cpp

@@ -297,7 +297,7 @@ class Graph {
 		virtual bool is_edge(T u, T v) = 0; 
 		virtual void transpose() = 0; 
 		virtual ~Graph() {}
-		typedef T vertix_type; 
+		typedef T vertex_type; 
 		bool dir; 
 		uset<T> V; 
 }; 
@@ -528,8 +528,8 @@ void graphviz(T& G, F1 f1, F2 f2) {
 
 template <typename T>
 void graphviz(T& G) {
-	auto f1 = [](typename T::vertix_type v) { return false; }; 
-	auto f2 = [](Edge<typename T::vertix_type>) {}; 
+	auto f1 = [](typename T::vertex_type v) { return false; }; 
+	auto f2 = [](Edge<typename T::vertex_type>) {}; 
 	graphviz(G, f1, f2); 
 }
 #endif

MaximumBipartiteMatching.cpp

@@ -31,7 +31,7 @@
 template <typename GT>
 class Bipartite: public GT {
 	public:
-		using T = typename GT::vertix_type; 
+		using T = typename GT::vertex_type; 
 		Bipartite(bool direction): GT(direction) {}
 		template <typename F1, typename F2>
 		void graphviz(F1 f1, F2 f2) {