diff --git a/LeetCode-CN/刷题.md b/LeetCode-CN/刷题.md
index e1a9a3b..727f43f 100644
--- a/LeetCode-CN/刷题.md
+++ b/LeetCode-CN/刷题.md
@@ -2,6 +2,7 @@
 
 [TOC]
 # 作业
+[TOC]
 ## 627. 交换工资 @2018/06/20
 
 ### jzf :517ms