根号的也行
by _LittleBlack_ @ 2022-06-24 19:48:41
@[_LittleBlack_](/user/733922) Ynoi全家桶（什
by Static_int @ 2022-06-24 19:49:59
大学
by TernaryTree @ 2022-06-24 19:50:32
@[_LittleBlack_](/user/733922) P4118末日三问，时间复杂度 $O(n\sqrt{n\log n})$，一次满足两个愿望（
by Static_int @ 2022-06-24 19:51:31
@[Static_int](/user/731608) 大哥，黑题以下。。。
您看我这个灰名（刚注册）像是能做黑题的人吗
by _LittleBlack_ @ 2022-06-24 19:53:55
（此处请颜色歧视我
by _LittleBlack_ @ 2022-06-24 19:54:19
@[_LittleBlack_](/user/733922) 《黑题一下》对不起啊我还以为你要找黑题
by Static_int @ 2022-06-24 19:54:41
@[Static_int](/user/731608) 我现在顶多做个紫题。。。
by _LittleBlack_ @ 2022-06-24 19:56:09
@[_LittleBlack_](/user/733922)
- [P1531](https://www.luogu.com.cn/problem/P1531) 线段树
- [P1816](https://www.luogu.com.cn/problem/P1816) 线段树/ST
- [P2787](https://www.luogu.com.cn/problem/P2787) 线段树板子，有一些思维难度。~~难度与评级明显不符~~
- [P1471](https://www.luogu.com.cn/problem/P1471) 蓝题，难点在线段树的状态设计。
- [P1903](https://www.luogu.com.cn/problem/P1903) 莫队基础题。
- [P4145](https://www.luogu.com.cn/problem/P4145) 线段树+玄学优化
- [P2596](https://www.luogu.com.cn/problem/P2596) 平衡树，可用vector水过
by Static_int @ 2022-06-24 20:05:25
@[Static_int](/user/731608) 感谢大佬的回答
by Gumbo @ 2022-06-24 20:17:44