diff --git a/15lanqiao/test1-1.cpp b/15lanqiao/test1-1.cpp
index 258e8e1..a380c9e 100644
--- a/15lanqiao/test1-1.cpp
+++ b/15lanqiao/test1-1.cpp
@@ -1,3 +1,4 @@
+// lanqiao19695 握手问题
 #include<bits/stdc++.h>
 using namespace std;