@[Bant_Metor](/user/389729) 从 $2$ ~ $n$ 的每个点 $i$ 向 $1$ ~ $i-1$ 之间的点随机连一条边
by cannotdp @ 2023-10-31 19:56:43
为什么要始终为树啊?
这图允许有环
by BGM114514 @ 2023-10-31 19:56:52
@[BGM114514](/user/705058)
对了是我脑抽了
by Bant_Metor @ 2023-10-31 19:58:32
@[cannotdp](/user/190931)
谢谢
by Bant_Metor @ 2023-10-31 19:58:59