diff --git a/problems/0040.组合总和II.md b/problems/0040.组合总和II.md
index 83708df7..b708650a 100644
--- a/problems/0040.组合总和II.md
+++ b/problems/0040.组合总和II.md
@@ -214,6 +214,8 @@ public:
 };
 
 ```
+* 时间复杂度: O(n * 2^n)
+* 空间复杂度: O(n)
 
 ## 补充