diff --git a/15lanqiao/test5.cpp b/15lanqiao/test5.cpp
index 01dd4fe..aba1db4 100644
--- a/15lanqiao/test5.cpp
+++ b/15lanqiao/test5.cpp
@@ -1,3 +1,4 @@
+// lanqiao 19711 宝石组合
 #include<bits/stdc++.h>
 using namespace std;
 const int N = 1e5 + 10;