diff --git a/problems/1005.K次取反后最大化的数组和.md b/problems/1005.K次取反后最大化的数组和.md
index e57e26ad..5539aff8 100644
--- a/problems/1005.K次取反后最大化的数组和.md
+++ b/problems/1005.K次取反后最大化的数组和.md
@@ -102,7 +102,7 @@ Java：
 ```java
 class Solution {
     public int largestSumAfterKNegations(int[] A, int K) {
-        if (A.length == 1) return A[0];
+        if (A.length == 1) return k % 2 == 0 ? A[0] : -A[0];
         Arrays.sort(A);
         int sum = 0;
         int idx = 0;