有上过的神犇能告诉一下吗，谢谢
by 无情。浪剑心 @ 2020-09-20 22:34:02
@[chen_zhe](/user/8457)
by 无情。浪剑心 @ 2020-09-20 22:59:01
@[ღ橘子ღ](/user/339945) 
by answerend42 @ 2020-09-20 23:06:52
@[answerend42](/user/184228) 啊这，我知道，可没有说明有哪些算法啊
by 无情。浪剑心 @ 2020-09-20 23:13:50
@[ღ橘子ღ](/user/339945) <https://www.luogu.com.cn/discuss/show/235444>
by 云浅知处 @ 2020-09-20 23:33:21
@[云浅知处](/user/307453) 感激不尽
by 无情。浪剑心 @ 2020-09-20 23:35:46