@[BZHZS](/user/359492) 建议线段树(我明天再写
by ker_xyxyxyx_xxs @ 2021-07-22 00:41:01
你把system ("pause");删了试试,不然可能会卡住
by 鲁锦聪 @ 2021-07-22 16:28:45
**请使用快读快输**
by Shunpower @ 2021-10-18 19:26:38