同问
by BigBen2020 @ 2022-10-18 22:21:25
懂了，看这个[link](https://www.luogu.com.cn/discuss/104456)
by BigBen2020 @ 2022-10-18 22:23:05
@[BigBen2020](/user/370577) 感谢！
by y_kx_b @ 2022-11-11 11:58:45