0(指 nlogn FFT)
by fjy666 @ 2024-04-19 13:29:43
虽然FFT不让考,但是子集卷积是让考的!
by Limie @ 2024-04-19 13:32:54
@[Limie](/user/549855) 那狄利克雷卷积呢(太恶心了
by Jerry_heng @ 2024-04-19 13:45:38
大纲里没提到的知识点就代表可以考
by Limie @ 2024-04-19 13:52:25
狄利克雷卷积是基础吧()当然可以考
by Iniaugoty @ 2024-04-19 13:54:57
哦不对,这好像是大纲 NOI 级内容,那 NOIP 应该不考
by Iniaugoty @ 2024-04-19 13:56:24
https://www.luogu.com.cn/paste/n3ha3ntj
by Iniaugoty @ 2024-04-19 13:57:14
会考 $O(N^2)$ 卷积。
by _pragmaTism @ 2024-04-19 15:23:25