diff --git a/solutions/4. Median of Two Sorted Arrays.md b/solutions/4. Median of Two Sorted Arrays.md
index e8e2256..8c2d6d8 100644
--- a/solutions/4. Median of Two Sorted Arrays.md	
+++ b/solutions/4. Median of Two Sorted Arrays.md	
@@ -124,6 +124,8 @@ B[j-1] <= A[i] && A[i-1] <= B[j], where j = N - i
 
 
 # C++
+
+## 思路一
 ``` C++
 class Solution {
 public: