diff --git a/README.md b/README.md
index c577e12bf..c9933aabe 100644
--- a/README.md
+++ b/README.md
@@ -449,6 +449,8 @@ leetcode 题解，记录自己的 leetcode 解题之路。
 - [2939. 最大异或乘积](./problems/2939.maximum-xor-product.md)
 - [3377. 使两个整数相等的数位操作](./problems/3377.digit-operations-to-make-two-integers-equal.md)
 - [3404. 统计特殊子序列的数目](./problems/3404.count-special-subsequences.md)
+- [3428. 至多 K 个子序列的最大和最小和](./problems/3428.maximum-and-minimum-sums-of-at-most-size-k-subsequences.md)
+
 ### 困难难度题目合集
 
 困难难度题目从类型上说多是：
diff --git a/SUMMARY.md b/SUMMARY.md
index bdcb97743..d9755d5bf 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -285,6 +285,7 @@
   - [2939. 最大异或乘积](./problems/2939.maximum-xor-product.md)
   - [3377. 使两个整数相等的数位操作](./problems/3377.digit-operations-to-make-two-integers-equal.md)
   - [3404. 统计特殊子序列的数目](./problems/3404.count-special-subsequences.md)
+  - [3428. 至多 K 个子序列的最大和最小和](./problems/3428.maximum-and-minimum-sums-of-at-most-size-k-subsequences.md)
 
 - [第六章 - 高频考题（困难）](collections/hard.md)