diff --git a/source/_posts/homework.md b/source/_posts/homework.md
index 19bc27f..3d3246f 100644
--- a/source/_posts/homework.md
+++ b/source/_posts/homework.md
@@ -25,4 +25,4 @@ tags:
 # 第四次作业
 
 * [题目](/~zhaozuohong/homework4/)
-
+* [答案](/~zhaozuohong/answer4/)