%p 那里这一次之后就不变了啊，你不还得自己算
by Illusory_dimes @ 2022-10-29 09:05:23
@[Illusory_dimes](/user/206024) 哦，所以用逆元算是吧
by YuRuochen @ 2022-10-29 09:10:24
$m$ 等于 $0$ 或 $n$
by Φρανκ @ 2022-10-29 09:27:19