diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..35410ca
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,8 @@
+# 默认忽略的文件
+/shelf/
+/workspace.xml
+# 基于编辑器的 HTTP 客户端请求
+/httpRequests/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
diff --git a/.idea/TouGe-Huffman-Tree.iml b/.idea/TouGe-Huffman-Tree.iml
new file mode 100644
index 0000000..f08604b
--- /dev/null
+++ b/.idea/TouGe-Huffman-Tree.iml
@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module classpath="CMake" type="CPP_MODULE" version="4" />
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..1861faa
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/TouGe-Huffman-Tree.iml" filepath="$PROJECT_DIR$/.idea/TouGe-Huffman-Tree.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..94a25f7
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/SY1.cpp b/SY1.cpp
new file mode 100644
index 0000000..e1edbfb
--- /dev/null
+++ b/SY1.cpp
@@ -0,0 +1,73 @@
+//   /Users/zhangzhiqi/Library/Mobile Documents/M6HJR9W95L~com~textasticapp~textastic/Documents/CLionProjects/TouGe-Huffman-Tree/SY1.cpp
+//   Copyright (c) 2022.
+//   @Time    : 2022/4/30   13:9:13
+//   @Author : 张稚琦
+//   @Address: 湖北理工学院腾龙公寓 5620
+//   @Email   : zhang@zhang.mba / zhangzhiqi828@gmail.com / zhangzhiqi@lh83.onmicrosoft.com / 2272358828@qq.com
+//   @File      : SY1.cpp
+//   @LastModified: 2022/4/30 下午1:07
+//   @ProjectName : TouGe_Huffman_Tree
+
+# include <stdio.h>
+# include <iostream>
+# include <string.h>
+using namespace std;
+
+
+typedef struct          //define structure HuffmanTree
+{   int weight;
+    int parent,lchild,rchild;
+}HTNode,*HuffmanTree;
+
+typedef char **  HuffmanCode;
+
+void Select(HuffmanTree HT,int i,int &s1,int &s2) ;//选出HT树到i为止，权值最小且parent为0的2个节点
+void HuffmanTreeing(HuffmanTree &HT,int *w,int n);//构建哈夫曼树函数
+
+void output(HuffmanTree HT,int m);//输出哈夫曼树
+
+int main()
+{
+    HuffmanTree HT;
+    HuffmanCode HC;
+    int n,i;
+    int *w;
+    scanf("%d",&n);
+    w=(int *)malloc(n*sizeof(int));
+    for(i=0;i<n;i++)
+    {
+        scanf("%d",&w[i]);
+    }
+    HuffmanTreeing( HT , w  ,n  );
+    cout<<"哈夫曼树:"<<endl;
+    output(HT,2*n-1);
+    return 0;
+}
+
+void Select(HuffmanTree HT,int i,int &s1,int &s2)
+{   //选出HT树到i为止，权值最小且parent为0的2个节点
+    //s1 is the least of HT[].weight
+    //s2 is the second least of HT[].weight
+    /********** Begin **********/
+
+    /********** End **********/
+}
+
+
+void HuffmanTreeing(HuffmanTree &HT,int *w,int n) //构建哈夫曼树函数
+{ // w存放n个字符的权值(均>0)，构造赫夫曼树HT
+    /********** Begin **********/
+
+
+    /********** End **********/
+}
+
+
+void output(HuffmanTree HT,int m)
+{ //输出哈夫曼树
+    for(int i=1;i<=m;++i)
+    {
+        cout<<"HT["<<i<<"] ="<<HT[i].weight<<"\t"<<HT[i]. parent<<"\t";
+        cout<<"\t" <<HT[i]. lchild <<"\t" <<HT[i]. rchild<<endl;
+    }
+}