diff --git a/15lanqiao/test8.cpp b/15lanqiao/test8.cpp
index 9d1d97b..08c269b 100644
--- a/15lanqiao/test8.cpp
+++ b/15lanqiao/test8.cpp
@@ -1,3 +1,4 @@
+// lanqiao 19713 拔河
 #include<bits/stdc++.h>
 using namespace std;
 #define int long long