lovelish @ 2024-08-04 08:57:36
昨天atcoder的ABC365 F题看起来特别像洛谷原题，有人知道是哪一题吗？
rt
by SpeedStar @ 2024-08-04 09:00:08
https://www.luogu.com.cn/problem/AT_joisc2019_i