搞错了……$2n << 2$ 2n再乘上4倍空间
by 落影汐雾 @ 2019-01-09 21:07:29
@[IMist](/space/show?uid=51525) orz
by Juan_feng @ 2019-01-09 21:27:00
orz
by 123886a123886 @ 2021-09-29 21:23:20