不知道诶，我开 $10^5$（[here](https://www.luogu.com.cn/record/108878573)）都可以过，可能你其它地方写挂了。
by ATZdhjeb @ 2023-06-26 13:30:54
emm,但是就只有5和6的区别
by wolfy @ 2023-06-26 14:11:24
@ATZdhjeb,我邻接表忘开二倍空间了【怒拍桌子】
by wolfy @ 2023-06-26 14:22:38