diff --git a/src/main.cpp b/src/main.cpp
index 63ce472..52df895 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -2,35 +2,148 @@
 #include <map>
 #include <chrono>
 #include <random>
+#include "vbtree.h"
+#include "sbt.h"
+
 
 using namespace std;
 using chrono::high_resolution_clock;
 
+int IntCompare(int v1, int v2)
+{
+  if (v1 > v2)
+  {
+    return 1;
+  }
+  else if (v1 < v2)
+  {
+    return -1;
+  }
+  else
+  {
+    return 0;
+  }
+}
 
+const ULONG N = 5000000;
 
 void Case1()
 {
-    std::map<int, int> m;
-	
+  std::map<int, int> m;
 
-    default_random_engine e;
-    std::uniform_int_distribution<> dist{0, 1000000000};
-    double N = 1000000;
+  default_random_engine e;
+  std::uniform_int_distribution<> dist{0, 1000000000};
 
+  high_resolution_clock::time_point t1 = high_resolution_clock::now(); //返回时间戳
 
-    high_resolution_clock::time_point t1 = high_resolution_clock::now(); //返回时间戳
+  for (ULONG i = 0; i < N; i++)
+  {
+    auto v = dist(e);
+    m[v] = v;
+  }
+  high_resolution_clock::time_point t2 = high_resolution_clock::now(); //返回时间戳
 
-    for (int i = 0; i < N; i++)
-    {
-		auto v = dist(e);
-		m[v] = v;
-    }
-    high_resolution_clock::time_point t2 = high_resolution_clock::now(); //返回时间戳
-
-	std::cout << (t2 - t1).count() / N << std::endl;
-    std::cout << "end Push Case Benchmark" << std::endl;
+  std::cout << (t2 - t1).count() / N << std::endl;
+  std::cout << "end RBTree Case Benchmark" << std::endl;
 }
 
-int main(int argc, char *argv[]) {
-	Case1();
+void Case1_1()
+{
+  std::map<int, int> m;
+
+  default_random_engine e;
+  std::uniform_int_distribution<> dist{0, 1000000000};
+
+  vector<int> vec;
+
+  for (ULONG i = 0; i < N; i++)
+  {
+    auto v = dist(e);
+    m[v] = v;
+    vec.push_back(v);
+  }
+
+  high_resolution_clock::time_point t1 = high_resolution_clock::now(); //返回时间戳
+
+  for(auto iter = vec.begin(); iter != vec.end() ; iter++) {
+      m[*iter];
+  }
+
+   high_resolution_clock::time_point t2 = high_resolution_clock::now(); //返回时间戳
+
+  std::cout << (t2 - t1).count() / N << std::endl;
+  std::cout << "end RBTree Case Benchmark" << std::endl;
+}
+
+void Case2()
+{
+  VBTree<int, int> m(IntCompare);
+
+  default_random_engine e;
+  std::uniform_int_distribution<> dist{0, 1000000000};
+
+  high_resolution_clock::time_point t1 = high_resolution_clock::now(); //返回时间戳
+
+  for (ULONG i = 0; i < N; i++)
+  {
+    auto v = dist(e);
+    m.put(v, v);
+  }
+  high_resolution_clock::time_point t2 = high_resolution_clock::now(); //返回时间戳
+
+  std::cout << (t2 - t1).count() / N << std::endl;
+  std::cout << "end VBTree Case Benchmark" << std::endl;
+}
+
+void Case2_1()
+{
+  VBTree<int, int> m(IntCompare);
+
+  default_random_engine e;
+  std::uniform_int_distribution<> dist{0, 1000000000};
+
+  vector<int> vec;
+
+  for (ULONG i = 0; i < N; i++)
+  {
+    auto v = dist(e);
+    m.put(v, v);
+    vec.push_back(v);
+  }
+
+  high_resolution_clock::time_point t1 = high_resolution_clock::now(); //返回时间戳
+
+  for(auto iter = vec.begin(); iter != vec.end() ; iter++) {
+      m.get(*iter);
+  }
+
+  high_resolution_clock::time_point t2 = high_resolution_clock::now(); //返回时间戳
+
+  std::cout << (t2 - t1).count() / N << std::endl;
+  std::cout << "end VBTree Case Benchmark" << std::endl;
+}
+
+void Case3() {
+  BinaryTree tree;
+
+  default_random_engine e;
+  std::uniform_int_distribution<> dist{0, 1000000000};
+
+  high_resolution_clock::time_point t1 = high_resolution_clock::now(); //返回时间戳
+
+  for (ULONG i = 0; i < N; i++)
+  {
+    auto v = dist(e);
+    tree.insert(v);
+  }
+  high_resolution_clock::time_point t2 = high_resolution_clock::now(); //返回时间戳
+
+  std::cout << (t2 - t1).count() / N << std::endl;
+  std::cout << "end SBT Case Benchmark" << std::endl;    
+}
+
+int main(int argc, char *argv[])
+{
+  Case2_1();
+  // Case1();
 }
\ No newline at end of file
diff --git a/src/sbt.h b/src/sbt.h
new file mode 100644
index 0000000..190ecc6
--- /dev/null
+++ b/src/sbt.h
@@ -0,0 +1,314 @@
+
+#include <iostream>
+using namespace std;
+ 
+class SBTNode {
+public:
+	//size:子树大小(就是以当前结点为根构成的树有多少结点)
+	//data:权值，就是树上的结点储存的值
+	//value:应该是临时储存权值的
+    int data, size, value;
+    SBTNode * lchild, * rchild, * father;
+	//构造函数，参数分别为 权值，以当前结点为根的树的大小，父亲结点
+    SBTNode(int init_data, int init_size = 0, SBTNode * init_father = NULL);
+    ~SBTNode();
+	//下面依次是
+	//二叉排序树的插入，搜索，找前驱，找后继，移除某个度为0或1的结点，移除某个权值的点，找出第k大的元素
+    void insert(int value);
+    SBTNode * search(int value);
+    SBTNode * predecessor();
+    SBTNode * successor();
+    void remove_node(SBTNode * delete_node);
+    bool remove(int value);
+    int select(int k);
+};
+ 
+class BinaryTree {
+private:
+    SBTNode * root;
+public:
+    BinaryTree();
+    ~BinaryTree();
+	//下面依次是
+	//二叉树的插入 查找 删除结点 找出第k大的树，都是以上面的结点类的函数为基础的
+    void insert(int value);
+    bool find(int value);
+    bool remove(int value);
+    int select(int k);
+};
+ 
+//这里搞了个权值为0的结点，避免在边界情况时对空指针（NULL）进行特判，所以将所有原本指向空指针的情况都改为指向一个 ZPTR，并将其 size 设置为 0，从而降低代码复杂度。
+SBTNode ZERO(0);
+SBTNode * ZPTR = &ZERO;
+ 
+SBTNode::SBTNode(int init_data, int init_size, SBTNode * init_father) {
+    data = init_data;
+    size = init_size;
+    lchild = ZPTR;
+    rchild = ZPTR;
+    father = init_father;
+}
+ 
+SBTNode::~SBTNode() {
+    if (lchild != ZPTR) {
+        delete lchild;
+    }
+    if (rchild != ZPTR) {
+        delete rchild;
+    }
+}
+ 
+//左旋：将右孩子变为“根结点”（当前子树的根结点），右孩子的左孩子就变成原来的根结点的右孩子
+//下面注释中：node（原来的根结点）的右孩子用“根结点”来说
+SBTNode * left_rotate(SBTNode * node) {
+	//用temp保存“根结点”
+    SBTNode * temp = node->rchild;
+	//“根结点”的左孩子  变成node（原来的根结点）的右孩子
+    node->rchild = temp->lchild;
+	//更新“根结点”原来的左孩子的父亲为node（原来的根结点） 
+    temp->lchild->father = node;
+	//node（原来的根结点） 就变成“根结点”的左孩子
+    temp->lchild = node;
+	//“根结点”的父亲更新为node（原来的根结点）的父亲
+    temp->father = node->father;
+	//node（原来的根结点）的父亲更新为“根结点”
+    node->father = temp;
+	//“根结点”的大小更新为node（原来的根结点）的大小（这里的大小是以该结点为根构成的树的结点的个数）
+    temp->size = node->size;
+	//node（原来的根结点）的大小更新为 它左孩子和右孩子的大小再在上本身1
+    node->size = node->lchild->size + node->rchild->size + 1;
+	//返回左旋后的根结点
+    return temp;
+}
+ 
+//右旋：将左孩子变为“根结点”（当前子树的根结点），左孩子的右孩子就变成原来的根结点的左孩子
+//下面注释中：node（原来的根结点）的左孩子用“根结点”来说
+//反正这里跟上几乎相反
+SBTNode * right_rotate(SBTNode * node) {
+	//用temp保存“根结点”
+    SBTNode * temp = node->lchild;
+	//“根结点”的右孩子  变成node（原来的根结点）的左孩子
+    node->lchild = temp->rchild;
+	//更新“根结点”原来的右孩子的父亲为node（原来的根结点） 
+    temp->rchild->father = node;
+	//node（原来的根结点） 就变成“根结点”的右孩子
+    temp->rchild = node;
+	//“根结点”的父亲更新为node（原来的根结点）的父亲
+    temp->father = node->father;
+	//node（原来的根结点）的父亲更新为“根结点”
+    node->father = temp;
+	//“根结点”的大小更新为node（原来的根结点）的大小（这里的大小是以该结点为根构成的树的结点的个数）
+    temp->size = node->size;
+	//node（原来的根结点）的大小更新为 它左孩子和右孩子的大小再在上本身1
+    node->size = node->lchild->size + node->rchild->size + 1;
+	//返回右旋后的根结点
+    return temp;
+}
+ 
+//利用上面的左右旋进行调整的函数
+//flag为false：处理左子树更高的情况，否则处理右子树更高的情况
+//node:要调整的子树的根结点
+SBTNode * maintain(SBTNode * node, bool flag) {
+	//左子树比右子树高（或者叫深度要深）
+    if (flag == false) {
+		//LL型：左子树的左子树的元素个数大于右子树的元素个数，应进行右旋
+        if (node->lchild->lchild->size > node->rchild->size) {
+			//右旋并更新子树的根结点
+            node = right_rotate(node);
+        }
+		//LR型：左子树的右子树的元素个数大于右子树的元素个数
+		//那么先对左子树进行左旋，就变成LL型，再右旋即可
+		else if (node->lchild->rchild->size > node->rchild->size) {
+			//左旋并更新左子树的根结点
+            node->lchild = left_rotate(node->lchild);
+			//右旋并更新根节点
+            node = right_rotate(node);
+        } else {
+			//说明平衡了，返回根节点
+            return node;
+        }
+	//右子树比左子树高（或者叫深度要深）
+    } else {
+		//RR型：右子树的右子树的元素个数大于左子树的元素个数,应进行左旋
+        if (node->rchild->rchild->size > node->lchild->size) {
+			//左旋并更新根节点
+            node = left_rotate(node);
+        }
+		//RL型: 右子树的左子树的元素个数大于左子树的元素个数
+		//那么先对右子树进行右旋，变成RR型，在左旋即可
+		else if (node->rchild->lchild->size > node->lchild->size) {
+			//右旋并更新左子树的根结点
+            node->rchild = right_rotate(node->rchild);
+			//左旋并更新根节点
+            node = left_rotate(node);
+        } else {
+			//说明平衡了，返回根节点
+            return node;
+        }
+    }
+	//下面为递归调用，因为有时上面的调整过后，左子树和右子树的某个结点还是不平衡
+ 
+	//递归调用，处理可能左子树的左子树高度更高的情况
+	//false表示左子树较高
+    node->lchild = maintain(node->lchild, false);
+	//其右子树的右子树高度更高的情况
+    node->rchild = maintain(node->rchild, true);
+	//最后再对子树根结点的左右子树递归进行调整
+    node = maintain(node, false);
+    node = maintain(node, true);
+	//返回调整后的子树的根结点
+    return node;
+}
+ 
+SBTNode * insert(SBTNode * node, int value) {
+    if (value == node->data) {
+        return node;
+    } else {
+        node->size++;
+        if (value > node->data) {
+            if (node->rchild == ZPTR) {
+                node->rchild = new SBTNode(value, 1, node);
+            } else {
+                node->rchild = insert(node->rchild, value);
+            }
+        } else {
+            if (node->lchild == ZPTR) {
+                node->lchild = new SBTNode(value, 1, node);
+            } else {
+                node->lchild = insert(node->lchild, value);
+            }
+        }
+    }
+    return maintain(node, value > node->data);
+}
+ 
+SBTNode * SBTNode::search(int value) {
+    if (data == value) {
+        return this;
+    } else if (value > data) {
+        if (rchild == ZPTR) {
+            return ZPTR;
+        } else {
+            return rchild->search(value);
+        }
+    } else {
+        if (lchild == ZPTR) {
+            return ZPTR;
+        } else {
+            return lchild->search(value);
+        }
+    }
+}
+ 
+SBTNode * SBTNode::predecessor() {
+    SBTNode * temp = lchild;
+    while (temp != ZPTR && temp->rchild != ZPTR) {
+        temp = temp->rchild;
+    }
+    return temp;
+}
+ 
+SBTNode * SBTNode::successor() {
+    SBTNode * temp = rchild;
+    while (temp != ZPTR && temp->lchild != ZPTR) {
+        temp = temp->lchild;
+    }
+    return temp;
+}
+ 
+void SBTNode::remove_node(SBTNode * delete_node) {
+    SBTNode * temp = ZPTR;
+    if (delete_node->lchild != ZPTR) {
+        temp = delete_node->lchild;
+        temp->father = delete_node->father;
+        delete_node->lchild = ZPTR;
+    }
+ 
+    if (delete_node->rchild != ZPTR) {
+        temp = delete_node->rchild;
+        temp->father = delete_node->father;
+        delete_node->rchild = ZPTR;
+    }
+    if (delete_node->father->lchild == delete_node) {
+        delete_node->father->lchild = temp;
+    } else {
+        delete_node->father->rchild = temp;
+    }
+    temp = delete_node;
+    while (temp != NULL) {
+        temp->size--;
+        temp = temp->father;
+    }
+    delete delete_node;
+}
+ 
+bool SBTNode::remove(int value) {
+    SBTNode * delete_node, * current_node;
+    current_node = search(value);
+    if (current_node == ZPTR) {
+        return false;
+    }
+    size--;
+    if (current_node->lchild != ZPTR) {
+        delete_node = current_node->predecessor();
+    } else if (current_node->rchild != ZPTR) {
+        delete_node = current_node->successor();
+    } else {
+        delete_node = current_node;
+    }
+    current_node->data = delete_node->data;
+    remove_node(delete_node);
+    return true;
+}
+ 
+int SBTNode::select(int k) {
+    //rank表示当前结点在子树的排位
+	int rank = lchild->size + 1;
+	//若rank等于第k小的k，说明就是要找的值，直接返回权值即可
+	if (rank == k) {
+		return data;
+	}else if (k < rank) {
+	//小于rank，就表明要找比当前结点更小的，就在左边查找
+		return lchild->select(k);
+	}else{
+	//大于就在右边咯
+		//这里为什么看k - rank呢，因为我们已经把前rank排除了，
+		//相当于我们要在右子树（把他当做一颗新的树去查找），所以排位当然要减去rank了
+		return rchild->select(k - rank);
+	}
+}
+ 
+BinaryTree::BinaryTree() {
+    root = NULL;
+}
+ 
+BinaryTree::~BinaryTree() {
+    if (root != NULL) {
+        delete root;
+    }
+}
+ 
+void BinaryTree::insert(int value) {
+    if (root == NULL) {
+		//初始化时只有根结点，所以子树大小为1
+        root = new SBTNode(value, 1);
+    } else {
+        root = ::insert(root, value);
+    }
+}
+ 
+bool BinaryTree::find(int value) {
+    if (root->search(value) == NULL) {
+        return false;
+    } else {
+       return true;
+    }
+}
+ 
+bool BinaryTree::remove(int value) {
+    return root->remove(value);
+}
+ 
+int BinaryTree::select(int k) {
+    return root->select(k);
+}
diff --git a/src/vbtree.h b/src/vbtree.h
new file mode 100644
index 0000000..8eba988
--- /dev/null
+++ b/src/vbtree.h
@@ -0,0 +1,493 @@
+
+
+#include <iostream>
+#include <map>
+#include <tuple>
+#include <vector>
+
+using namespace std;
+using std::cout, std::endl;
+using std::tuple, std::make_tuple;
+
+typedef unsigned long ULONG;
+
+template <class TKey, class TValue>
+class VBTree
+{
+public:
+	typedef int (*Compare)(TKey, TKey);
+	struct TreeNode
+	{
+		TreeNode *children[2];
+		TreeNode *parent;
+		unsigned long size;
+		TKey key;
+		TValue value;
+
+		TreeNode()
+		{
+			this->children[0] = NULL;
+			this->children[1] = NULL;
+			this->parent = NULL;
+			this->size = 1;
+		}
+		/* data */
+	};
+
+private:
+	TreeNode *root;
+	Compare compare;
+	ULONG getSize(TreeNode *cur)
+	{
+		if (cur == NULL)
+		{
+			return 0;
+		}
+		return cur->size;
+	}
+
+	ULONG getChildrenSumSize(TreeNode *cur)
+	{
+		return this->getSize(cur->children[0]) + this->getSize(cur->children[1]);
+	}
+
+	tuple<ULONG, ULONG> getChildrenSize(TreeNode *cur)
+	{
+		return make_tuple(this->getSize(cur->children[0]), this->getSize(cur->children[1]));
+	}
+
+	void swap_node_kv(TreeNode *n1, TreeNode *n2)
+	{
+		TKey tempkey = n1->key;
+		TValue tempvalue = n1->value;
+
+		n1->key = n2->key; //交换值达到, 相对位移
+		n1->value = n2->value;
+
+		n2->key = tempkey;
+		n2->value = tempvalue;
+	}
+
+	void lrrotate3(TreeNode *cur)
+	{
+		const int l = 1;
+		const int r = 0;
+
+		TreeNode *movparent = cur->children[l];
+		TreeNode *mov = movparent->children[r];
+
+		this->swap_node_kv(mov, cur);
+
+		cur->children[r] = mov;
+		mov->parent = cur;
+
+		cur->children[l] = movparent;
+		movparent->children[r] = NULL;
+
+		cur->children[r] = mov;
+		mov->parent = cur;
+
+		cur->children[l]->size = 1;
+	}
+
+	void lrrotate(TreeNode *cur)
+	{
+
+		const int l = 1;
+		const int r = 0;
+
+		TreeNode *movparent = cur->children[l];
+		TreeNode *mov = movparent->children[r];
+
+		this->swap_node_kv(mov, cur); //交换值达到, 相对位移
+
+		if (mov->children[l] != NULL)
+		{
+			movparent->children[r] = mov->children[l];
+			movparent->children[r]->parent = movparent;
+			//movparent->children[r].child = l
+		}
+		else
+		{
+			movparent->children[r] = NULL;
+		}
+
+		if (mov->children[r] != NULL)
+		{
+			mov->children[l] = mov->children[r];
+		}
+		else
+		{
+			mov->children[l] = NULL;
+		}
+
+		if (cur->children[r] != NULL)
+		{
+			mov->children[r] = cur->children[r];
+			mov->children[r]->parent = mov;
+		}
+		else
+		{
+			mov->children[r] = NULL;
+		}
+
+		cur->children[r] = mov;
+		mov->parent = cur;
+
+		movparent->size = getChildrenSumSize(movparent) + 1;
+		mov->size = getChildrenSumSize(mov) + 1;
+		cur->size = getChildrenSumSize(cur) + 1;
+	}
+
+	void rlrotate3(TreeNode *cur)
+	{
+		const int l = 0;
+		const int r = 1;
+
+		TreeNode *movparent = cur->children[l];
+		TreeNode *mov = movparent->children[r];
+
+		this->swap_node_kv(mov, cur);
+
+		cur->children[r] = mov;
+		mov->parent = cur;
+
+		cur->children[l] = movparent;
+		movparent->children[r] = NULL;
+
+		cur->children[r] = mov;
+		mov->parent = cur;
+
+		cur->children[l]->size = 1;
+	}
+
+	void rlrotate(TreeNode *cur)
+	{
+		const int l = 0;
+		const int r = 1;
+
+		TreeNode *movparent = cur->children[l];
+		TreeNode *mov = movparent->children[r];
+
+		this->swap_node_kv(mov, cur);
+
+		if (mov->children[l] != NULL)
+		{
+			movparent->children[r] = mov->children[l];
+			movparent->children[r]->parent = movparent;
+		}
+		else
+		{
+			movparent->children[r] = NULL;
+		}
+
+		if (mov->children[r] != NULL)
+		{
+			mov->children[l] = mov->children[r];
+		}
+		else
+		{
+			mov->children[l] = NULL;
+		}
+
+		if (cur->children[r] != NULL)
+		{
+			mov->children[r] = cur->children[r];
+			mov->children[r]->parent = mov;
+		}
+		else
+		{
+			mov->children[r] = NULL;
+		}
+
+		cur->children[r] = mov;
+		mov->parent = cur;
+
+		movparent->size = this->getChildrenSumSize(movparent) + 1;
+		mov->size = this->getChildrenSumSize(mov) + 1;
+		cur->size = this->getChildrenSumSize(cur) + 1;
+	}
+
+	void rrotate3(TreeNode *cur)
+	{
+		const int l = 0;
+		const int r = 1;
+		// 1 right 0 left
+		TreeNode *mov = cur->children[l];
+
+		this->swap_node_kv(mov, cur);
+
+		cur->children[r] = mov;
+
+		cur->children[l] = mov->children[l];
+		cur->children[l]->parent = cur;
+
+		mov->children[l] = NULL;
+
+		mov->size = 1;
+	}
+
+	void rrotate(TreeNode *cur)
+	{
+
+		const int l = 0;
+		const int r = 1;
+		// 1 right 0 left
+		TreeNode *mov = cur->children[l];
+
+		this->swap_node_kv(mov, cur);
+
+		//  mov->children[l]不可能为nil
+		mov->children[l]->parent = cur;
+
+		cur->children[l] = mov->children[l];
+
+		// 解决mov节点孩子转移的问题
+		if (mov->children[r] != NULL)
+		{
+			mov->children[l] = mov->children[r];
+		}
+		else
+		{
+			mov->children[l] = NULL;
+		}
+
+		if (cur->children[r] != NULL)
+		{
+			mov->children[r] = cur->children[r];
+			mov->children[r]->parent = mov;
+		}
+		else
+		{
+			mov->children[r] = NULL;
+		}
+
+		// 连接转移后的节点 由于mov只是与cur交换值,parent不变
+		cur->children[r] = mov;
+
+		mov->size = getChildrenSumSize(mov) + 1;
+		cur->size = getChildrenSumSize(cur) + 1;
+	}
+
+	void lrotate3(TreeNode *cur)
+	{
+		const int l = 1;
+		const int r = 0;
+		// 1 right 0 left
+		TreeNode *mov = cur->children[l];
+
+		this->swap_node_kv(cur, mov);
+
+		cur->children[r] = mov;
+
+		cur->children[l] = mov->children[l];
+		cur->children[l]->parent = cur;
+
+		mov->children[l] = NULL;
+
+		mov->size = 1;
+	}
+
+	void lrotate(TreeNode *cur)
+	{
+
+		const int l = 1;
+		const int r = 0;
+		// 1 right 0 left
+		TreeNode *mov = cur->children[l];
+
+		this->swap_node_kv(cur, mov);
+
+		//  mov->children[l]不可能为nil
+		mov->children[l]->parent = cur;
+
+		cur->children[l] = mov->children[l];
+
+		// 解决mov节点孩子转移的问题
+		if (mov->children[r] != NULL)
+		{
+			mov->children[l] = mov->children[r];
+		}
+		else
+		{
+			mov->children[l] = NULL;
+		}
+
+		if (cur->children[r] != NULL)
+		{
+			mov->children[r] = cur->children[r];
+			mov->children[r]->parent = mov;
+		}
+		else
+		{
+			mov->children[r] = NULL;
+		}
+
+		// 连接转移后的节点 由于mov只是与cur交换值,parent不变
+		cur->children[r] = mov;
+
+		mov->size = getChildrenSumSize(mov) + 1;
+		cur->size = getChildrenSumSize(cur) + 1;
+	}
+
+	void fixSize(TreeNode *cur, ULONG ls, ULONG rs)
+	{
+		if (ls > rs)
+		{
+			tuple<ULONG, ULONG> lllr = this->getChildrenSize(cur->children[0]);
+			ULONG llsize = std::get<0>(lllr);
+			ULONG lrsize = std::get<1>(lllr);
+			if (lrsize > llsize)
+			{
+				this->rlrotate(cur);
+			}
+			else
+			{
+				this->rrotate(cur);
+			}
+		}
+		else
+		{
+			tuple<ULONG, ULONG> rlrr = this->getChildrenSize(cur->children[1]);
+			ULONG rlsize = std::get<0>(rlrr);
+			ULONG rrsize = std::get<1>(rlrr);
+			if (rlsize > rrsize)
+			{
+				this->lrrotate(cur);
+			}
+			else
+			{
+				this->lrotate(cur);
+			}
+		}
+	}
+
+public:
+	VBTree(Compare compare)
+	{
+		this->compare = compare;
+		this->root = NULL;
+	}
+
+	TValue* get(TKey key)
+	{
+		for (TreeNode *n = this->root; n != NULL;)
+		{
+			int c = this->compare(key, n->key);
+			switch (c)
+			{
+			case -1:
+				n = n->children[0];
+				break;
+			case 1:
+				n = n->children[1];
+				break;
+			case 0:
+				return  &n->value;
+			}
+		}
+		return NULL;
+	}
+
+	void put(TKey key, TValue value)
+	{
+
+		if (this->root == NULL)
+		{
+			TreeNode *node = new TreeNode();
+			node->key = key;
+			node->value = value;
+			this->root = node;
+			return;
+		}
+
+		std::vector<TreeNode*> vsize;
+
+		for (TreeNode *cur = this->root;;)
+		{
+			if (cur->size > 8)
+			{
+				unsigned long factor = cur->size / 10;
+				unsigned long ls = cur->children[0]->size;
+				unsigned long rs = cur->children[1]->size;
+				if (rs >= ls * 2 + factor || ls >= rs * 2 + factor)
+				{
+					this->fixSize(cur, ls, rs);
+				}
+			}
+
+			// cur->size++;
+			vsize.push_back(cur);
+
+			int c = this->compare(key, cur->key);
+			if (c < 0)
+			{
+				if (cur->children[0] == NULL)
+				{
+					TreeNode *node = new TreeNode();
+					node->key = key;
+					node->value = value;
+
+					for (auto iter = vsize.begin(); iter != vsize.end();iter++) {
+						(*iter)->size ++ ;
+					}
+
+					cur->children[0] = node;
+					node->parent = cur;
+
+					if (cur->parent != NULL && cur->parent->size == 3)
+					{
+						if (cur->parent->children[0] == NULL)
+						{
+							this->lrrotate3(cur->parent);
+						}
+						else
+						{
+							this->rrotate3(cur->parent);
+						}
+					}
+					return;
+				}
+				cur = cur->children[0];
+			}
+			else if (c > 0)
+			{
+				if (cur->children[1] == NULL)
+				{
+					TreeNode *node = new TreeNode();
+					node->key = key;
+					node->value = value;
+
+					for (auto iter = vsize.begin(); iter != vsize.end();iter++) {
+						(*iter)->size ++ ;
+					}
+
+					cur->children[1] = node;
+					node->parent = cur;
+
+					if (cur->parent != NULL && cur->parent->size == 3)
+					{
+						if (cur->parent->children[1] == NULL)
+						{
+							this->rlrotate3(cur->parent);
+						}
+						else
+						{
+							this->lrotate3(cur->parent);
+						}
+					}
+					return;
+				}
+				cur = cur->children[1];
+			}
+			else
+			{
+				cur->key = key;
+				cur->value = value;
+				return;
+			}
+		}
+	};
+
+	/* data */
+};
diff --git a/src/vbtree.hpp b/src/vbtree.hpp
deleted file mode 100644
index b4c0299..0000000
--- a/src/vbtree.hpp
+++ /dev/null
@@ -1,80 +0,0 @@
-
-
-#include <iostream>
-#include <map>
-
-using namespace std;
-using std::cout, std::endl;
-
-template <class TKey, class TValue>
-class VBTree
-{
-public:
-    typedef struct Node
-    {
-        Node *children[2];
-        Node *parent;
-        unsigned long size;
-        TKey key;
-        TValue value;
-        /* data */
-    } ;
-
-public:
-    void put(TKey key, TValue value) {
-       Node *node = new Node();
-	}
-   
-	// if tree.root == nil {
-	// 	tree.root = node
-	// 	return
-	// }
-
-	// for cur := tree.root; ; {
-
-	// 	if cur.size > 8 {
-	// 		factor := cur.size / 10 // or factor = 1
-	// 		ls, rs := cur.children[0].size, cur.children[1].size
-	// 		if rs >= ls*2+factor || ls >= rs*2+factor {
-	// 			tree.fixSize(cur, ls, rs)
-	// 		}
-	// 	}
-
-	// 	cur.size++
-
-	// 	c := tree.Compare(key, cur.key)
-	// 	if c < 0 {
-	// 		if cur.children[0] == nil {
-	// 			cur.children[0] = node
-	// 			node.parent = cur
-
-	// 			if cur.parent != nil && cur.parent.size == 3 {
-	// 				if cur.parent.children[0] == nil {
-	// 					tree.lrrotate3(cur.parent)
-	// 				} else {
-	// 					tree.rrotate3(cur.parent)
-	// 				}
-	// 			}
-	// 			return
-	// 		}
-	// 		cur = cur.children[0]
-	// 	} else {
-	// 		if cur.children[1] == nil {
-	// 			cur.children[1] = node
-	// 			node.parent = cur
-
-	// 			if cur.parent != nil && cur.parent.size == 3 {
-	// 				if cur.parent.children[1] == nil {
-	// 					tree.rlrotate3(cur.parent)
-	// 				} else {
-	// 					tree.lrotate3(cur.parent)
-	// 				}
-	// 			}
-	// 			return
-	// 		}
-	// 		cur = cur.children[1]
-	// 	}
-	// }
-    
-    /* data */
-};