diff --git a/15lanqiao/test1-2.cpp b/15lanqiao/test1-2.cpp
index 8982a24..af242d6 100644
--- a/15lanqiao/test1-2.cpp
+++ b/15lanqiao/test1-2.cpp
@@ -1,3 +1,4 @@
+// lanqiao19695 握手问题(枚举法)
 #include<bits/stdc++.h>
 using namespace std;