摘要: 2024.12.21 周六 Q1. 1000 Lottery "Three Sevens" was held for $m$ days. On day $i$, $n_i$ people with the numbers $a_{i, 1}, \ldots, a_{i, n_i}$ particip 阅读全文
posted @ 2024-12-22 11:37 Jkke 阅读(24) 评论(0) 推荐(0)