diff --git a/others/test4.cpp b/others/test4.cpp
index 5e10680..2fced78 100644
--- a/others/test4.cpp
+++ b/others/test4.cpp
@@ -1,14 +1,11 @@
+// 测试
 #include<bits/stdc++.h>
 using namespace std;
-#define int long long 
-const int N = 1e5+7;
-int dp[N];
+#define int long long
+#define endl '\n'
+
 signed main(){
-    dp[1] = dp[2] = 1;
-    int n; cin >> n;
-    for(int i = 3; i <= n; i++){
-        dp[i] = dp[i-1] + dp[i-2];
-    }
-    cout << dp[n] << endl;
+    ios::sync_with_stdio(0), cin.tie(0), cout.tie(0);
+    cout << "hello lanqiao" << endl;
     return 0;
 }
\ No newline at end of file