祝P党早日转C++！
by WA鸭鸭 @ 2018-11-02 12:45:34
> 后面做题的人要谨慎,它的流最大会超过 $\max longint$ !!!
> 我开了 $\max longint \times 888$
by arfa @ 2018-11-02 12:52:34
我还不是正常写，样例能过但是爆零了
by walk_alone @ 2018-11-04 20:01:28