diff --git a/problems/0047.全排列II.md b/problems/0047.全排列II.md
index b1908fb4..3ff3fb8f 100644
--- a/problems/0047.全排列II.md
+++ b/problems/0047.全排列II.md
@@ -99,6 +99,8 @@ public:
 };
 
 ```
+* 时间复杂度: O(n)
+* 空间复杂度: O(n)
 
 ## 拓展