@[Chu_awa_xing](/user/759196) 思索后，我翻出了这道题。
一定要手写啊，~~我写了3月没写出来~~
<https://www.luogu.com.cn/problem/P5076>
by sapo1o @ 2024-04-26 16:36:17
@[sapo1o](/user/997236) get it
by Chu_awa_xing @ 2024-04-26 19:55:06