随笔分类 -  树状数组

Sequence
摘要：Oldjang has a sequence A of length n, the ith number in which is Ai . He defined a function \(f(l,r) = a_l⊕a_{l+1}⊕\dots ⊕a_r\). It is simple for the 阅读全文
posted @ 2020-12-16 17:10 肆之月 阅读(184) 评论(0) 推荐(0)