@[luogu_user1089090](/user/1089090) 朴素树状数组
by IOI_CCF @ 2024-04-27 21:47:18
@[IOI_CCF](/user/704275) 谢谢%%%%
by luogu_user1089090 @ 2024-04-27 21:58:01
[题解](https://www.luogu.com.cn/article/5hlwa8fe)
by _WRYYY_ @ 2024-04-27 22:04:36
fhq板子
by Comars @ 2024-04-27 22:56:20