diff --git a/three_sum/README.md b/three_sum/README.md
index e33f51b..1739b3e 100644
--- a/three_sum/README.md
+++ b/three_sum/README.md
@@ -1,3 +1,4 @@
 # 15. 3 Sum
+# 3 Sum
 
 * [problem link](https://leetcode.com/problems/3sum/)
diff --git a/three_sum/src/README.md b/three_sum/src/README.md
deleted file mode 100644
index a4a749e..0000000
--- a/three_sum/src/README.md
+++ /dev/null
@@ -1,3 +0,0 @@
-# 3 Sum
-
-* [problem link](https://leetcode.com/problems/3sum/)