@[optmize_2](/space/show?uid=224978) [~~尝试推销~~](https://www.luogu.org/blog/NullCatsBlog/solution-p3372)
by Null_Cat @ 2019-09-11 20:10:03
@[Null_Cat](/space/show?uid=213346) 指针线段树不是开两倍空间就可以了吗？qwq
by Mystery_Sky @ 2019-09-11 20:13:20
@[Mystery_Sky](/space/show?uid=115383) 窝这是指针数组qwq和数组没啥区别qwq
by Null_Cat @ 2019-09-11 20:17:39
噗哈哈哈哈哈哈哈我根本没在main里调用build哈哈哈哈哈哈哈哈
by optimize_2 @ 2019-09-12 21:51:19