diff --git a/README.md b/README.md
index c045a6c..ed640f0 100644
--- a/README.md
+++ b/README.md
@@ -2,3 +2,5 @@
 
 - [acwing](https://www.acwing.com/activity/content/introduction/6/)
 - [luogu](https://www.luogu.com.cn/training/505362)
+
+![ac-congrats](ac-congrats.png)