diff --git a/.gitignore b/.gitignore
index 6a8bc10..e1b8cb6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 .vscode
-build
\ No newline at end of file
+build
+main.exe
diff --git a/CMakeLists.txt b/CMakeLists.txt
index e7582cb..5280ba6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.0.0)
+cmake_minimum_required(VERSION 3.6)
 project(lc VERSION 0.1.0)
 
 include(CTest)
diff --git a/main.cpp b/main.cpp
index a2aed2c..e71f147 100644
--- a/main.cpp
+++ b/main.cpp
@@ -3,7 +3,7 @@
  * @Version: 1.0
  * @Autor: wxchen
  * @Date: 2022-11-21 15:27:10
- * @LastEditTime: 2022-11-21 21:08:42
+ * @LastEditTime: 2024-07-03 23:15:58
  */
 #include <iostream>
 #include <vector>
@@ -38,9 +38,9 @@ class Solution {
 
 int main(int, char**) {
 
-    // ListNode* head = new ListNode(1);
-    // head -> next = new ListNode(3);
-    // head -> next -> next = new ListNode(2);
+    ListNode* head = new ListNode(1);
+    head -> next = new ListNode(3);
+    head -> next -> next = new ListNode(2);
     
     Solution s;
     std::cout << s.reversePrint(head)[0] << s.reversePrint(head)[1] << s.reversePrint(head)[2] << std::endl;