摘要: 2024.12.28 周六 Q1. 1100 You are given two integers $l \le r$. You need to find positive integers $a$ and $b$ such that the following conditions are sim 阅读全文
posted @ 2024-12-29 18:47 Jkke 阅读(18) 评论(0) 推荐(0)