您是指http://uoj.ac/problem/2吗?
by lightup37 @ 2019-12-11 13:56:49
[P2114](https://www.luogu.com.cn/problem/P2114)？
by 木木！ @ 2019-12-11 14:01:29
P5354，被 lxl 改名了。
@[TLE自动机](/user/48744)
by skip2004 @ 2019-12-11 14:15:38
[我以前问过诶（](https://www.luogu.com.cn/discuss/show/122630)
~~虽然后来歪楼成政治考试诉苦帖了~~
by tiger0133 @ 2019-12-11 14:38:02
@[skip2004](/user/30122) orz钱爸
by TLE自动机 @ 2019-12-11 21:11:49