diff --git a/.vscode/c_cpp_properties.json b/.vscode/c_cpp_properties.json
index 092afcc..2e784d1 100644
--- a/.vscode/c_cpp_properties.json
+++ b/.vscode/c_cpp_properties.json
@@ -6,7 +6,8 @@
                 "${workspaceFolder}/**"
             ],
             "defines": [],
-            "intelliSenseMode": "linux-gcc-x64"
+            "intelliSenseMode": "linux-gcc-x64",
+            "configurationProvider": "ms-vscode.cmake-tools"
         }
     ],
     "version": 4
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..f9de35e 100644
--- a/main.cpp
+++ b/main.cpp
@@ -6,42 +6,8 @@
  * @LastEditTime: 2022-11-21 21:08:42
  */
 #include <iostream>
-#include <vector>
 
-using namespace std;
-
-struct ListNode {
-    int val;
-    ListNode* next;
-    // ListNode(int x) : val(x), next(NULL) {} // 
-    ListNode(int x, ListNode* n = NULL) : val(x), next(n) {}
-};
-
-class Solution {
-   public:
-    vector<int> reversePrint(ListNode* head) {
-        reverse(head);
-        return (result);
-    }
-
-   private:
-    vector<int> result;
-    void reverse(ListNode* head) {
-        if (head != nullptr) {
-            if (head->next != nullptr) {
-                reversePrint(head->next);
-            }
-            result.push_back(head->val);
-        }
-    };
-};
-
-int main(int, char**) {
-
-    // 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;
+int main() {
+    std::cout << "hello" << std::endl;
+    return 0;
 }