diff --git a/ex11/ex11.cpp b/ex11/ex11.cpp
index 604567c..71e57d6 100644
--- a/ex11/ex11.cpp
+++ b/ex11/ex11.cpp
@@ -1,7 +1,8 @@
 #include "graph.hpp"
-
+#include <stdio.h>
 int main()
 {
     graphVertex<int,std::string> gv;
+    printf("OK");
     return 0;
 }
\ No newline at end of file
diff --git a/ex11/graph.hpp b/ex11/graph.hpp
index 7f5a373..c3c1803 100644
--- a/ex11/graph.hpp
+++ b/ex11/graph.hpp
@@ -72,7 +72,7 @@ public:
         for (int j = 0; j < n; j++)
             delete V[j];
     }
-    virtual Tv Vertex(int i)
+    virtual Tv vertex(int i)
     {
         return V[i]->data;
     }
@@ -88,7 +88,8 @@ public:
     {
         if (V[id] == NULL)
         {
-            V[id] = new ::Vertex<Tv>(value);
+            Vertex<Tv>* temp= new Vertex<Tv>(value);
+            V.put(id, temp);
             // E[id] = new Vector<Edge<Te>>;
         }
         else
@@ -103,14 +104,14 @@ public:
             if (E[id][j] != NULL)
             {
                 delete E[id][j];
-                E[id][j] = NULL;
+                E[id].put(j,NULL);
                 V[j]->inDegree--;
             }
         }
         v--;
-        Tv temp = Vertex(id);
+        Tv temp = vertex(id);
         delete V[id];
-        V[id] = NULL;
+        V.put(id, NULL);
     }
 
     // id1->id2 进行连接
@@ -126,8 +127,8 @@ public:
             return -2;
         V[id1]->outDegree++;
         V[id2]->inDegree++;
-
-        E[id1][id2] = new Edge<Te>(w);
+        Edge<Te>* temp=new Edge<Te>(w);
+        E[id1].put(id2, temp);
         return 0;
     }
     // 解除 id1->id2 连接
diff --git a/ex11/vector.hpp b/ex11/vector.hpp
index acae663..cb138bd 100644
--- a/ex11/vector.hpp
+++ b/ex11/vector.hpp
@@ -6,7 +6,7 @@
 template <class T>
 class Vector
 {
-public:
+private:
   T *_v;
   int _len;
   int _used;
@@ -16,7 +16,7 @@ public:
   void shrink();
   void adjust();
 
-
+public:
   Vector(int len)
   {
     _used = 0;
@@ -84,7 +84,7 @@ template <class T>
 void Vector<T>::put(int a, T value)
 {
 
-  while (i >= _len)
+  while (a >= _len)
   {
     expand();
   }