二次剩余
by fjy666 @ 2024-03-27 13:47:40
@[CloudWings](/user/569316) https://www.luogu.com.cn/problem/P5491
by Leonid @ 2024-03-27 13:48:03
thx
by CloudWings @ 2024-03-27 14:07:02
也许可以扩展域
by lonely_seele @ 2024-03-27 14:07:39