diff --git a/15lanqiao/test7.cpp b/15lanqiao/test7.cpp
index 8454f54..0a919af 100644
--- a/15lanqiao/test7.cpp
+++ b/15lanqiao/test7.cpp
@@ -1,3 +1,4 @@
+// 爬山
 #include<bits/stdc++.h>
 using namespace std;
 const int N = 1e5 + 10;
@@ -20,7 +21,7 @@ int main(){
     cout << s << endl;
     return 0;
 }
-/* test samples
+/* test samples -> 18
 4 1 1
 4 5 6 49
 */
\ No newline at end of file