摘要: 2024.12.12 周四 Q1. 1000 You have an array $a$ of $n$ integers. You can no more than once apply the following operation: select three integers $i$, $j$, 阅读全文
posted @ 2024-12-13 12:16 Jkke 阅读(14) 评论(0) 推荐(0)