by 123xiayicheng @ 2023-02-19 20:44:29
@[vectorwyx](/user/238408) fixed
by chen_zhe @ 2023-02-19 20:45:17
cz!!!
by AIMEE11 @ 2023-02-19 20:48:37
天哪抢到楼下了！（
by AIMEE11 @ 2023-02-19 20:48:58
@[AIMEE11](/user/755327) 楼【】下
by Enoch007 @ 2023-02-19 20:54:10
cz:楼你【】下
by AIMEE11 @ 2023-02-19 20:55:57
而且还真有保证原图连通的版本：[P3733](https://www.luogu.com.cn/problem/P3733)
by vectorwyx @ 2023-02-20 11:51:35