是啊（
by 霍士弘 @ 2020-05-07 09:22:43
@[FZzzz](/user/174045) 开O2过去了/kk
by 霍士弘 @ 2020-05-07 10:05:39
@[liqingyang](/user/272088) @[zhaojinxi](/user/120026)
by 霍士弘 @ 2020-05-07 10:05:59
@[霍士弘](/user/137469) 您怎么写的啊qwq……
~~为什么我开 O3 也过不去~~
by zhjxaoini @ 2020-05-07 10:14:08
这题都能用树状数组...
by LZshuing @ 2020-05-07 10:15:20
@[霍士弘](/user/137469) tql，%%%
by liqingyang @ 2020-05-07 10:16:53
@[zhaojinxi](/user/120026) 就是快读快输然后一个普普通通的BIT
by 霍士弘 @ 2020-05-07 10:18:39
@[liqingyang](/user/272088) orz
by xhQYm @ 2020-05-07 10:26:32
@[霍士弘](/user/137469) ~~我还是太菜了~~
代码能发一下吗/kk
by zhjxaoini @ 2020-05-07 10:26:37
%%%，我也想看看楼主的代码
by Alan_Zhao @ 2020-05-07 10:27:54