vegetaBle_king @ 2021-09-21 12:08:07
https://www.luogu.com.cn/record/58325419
by Eroded @ 2021-09-21 12:12:54
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by xfrvq @ 2021-09-21 12:32:13
哦
by vegetaBle_king @ 2021-09-21 12:35:24
一大堆伞兵优化，inline，快读，位运算都用上了，然后……就草过了……
by impuk @ 2021-09-21 12:48:44
我乱写都比这个块
by yukimianyan @ 2021-09-21 12:54:19
只要快读板子好就随便过