~~用IF直接输出~~
by goodlearndaydayup @ 2018-09-18 12:49:43
可以面向数据编程
by Chloris @ 2018-09-18 12:52:37
玩玄学优化吧
by Fraction @ 2018-09-18 12:55:14
开个O2，然后用putchar和getchar优化一下
by ___I_AK_IOI @ 2018-09-18 13:07:04
用二维前缀和对每次询问O（1）回答
by Ackerman丶 @ 2018-09-21 16:28:24
@[Ackerman丶](/space/show?uid=91759) 正解，二维前缀和~~您真牛逼~~
by 狸狸养的敏敏 @ 2018-10-04 18:06:26
@[Ackerman丶](/space/show?uid=91759) 求讲解
by loaky @ 2018-10-10 10:00:53