@[disangan233](/space/show?uid=72679)
by p9t6g @ 2019-09-12 14:47:23
@[黄仁勋](/space/show?uid=23771) %%%hmh一口一个线段树
by Pecuria @ 2019-09-12 14:54:46
@[黄仁勋](/space/show?uid=23771) 我们来做[线段树](https://www.luogu.org/problem/P3352)吧
by Pecuria @ 2019-09-12 14:55:49
awa
by Pecuria @ 2019-09-12 14:55:58
再见啦您那，水题是欢乐的@[Kawashiro_Nitori](/space/show?uid=103627)
by p9t6g @ 2019-09-12 15:03:06
@[黄仁勋](/space/show?uid=23771) 还行
by disangan233 @ 2019-09-12 15:37:03
这个题怎么上线段树... 没搞懂
by Nicoppa @ 2019-09-12 15:39:37
@[Nicoppa](/space/show?uid=206319) 二维线段数直接加，然后统计==k的元素个数啊
by p9t6g @ 2019-09-12 15:48:24
@[黄仁勋](/space/show?uid=23771) Orz 二维线段树 太强了
by Nicoppa @ 2019-09-12 15:52:23
@[Nicoppa](/space/show?uid=206319) WTF
by p9t6g @ 2019-09-12 15:53:17