@[Cry_For_theMoon](/user/340632) WCT3是什么啊
by Ame2021 @ 2021-03-23 22:01:13
@[Ame2021](/user/99851) [这个](https://www.luogu.com.cn/problem/P7325)?
by Eason_AC @ 2021-03-23 22:02:12
@[Eason_AC](/user/112917) 啊这个结论OIwiki就有
by Ame2021 @ 2021-03-23 22:03:18
“经典结论”的出处显然应该是P4000吧/kel
by w23c3c3 @ 2021-03-23 22:12:12
反正我第一次看到这个结论是在这次月赛里
by zhy12138 @ 2021-03-23 22:14:47