随笔分类 -  组合数学

Rikka with Prefix Sum（组合数学）
摘要：Rikka with Prefix Sum 题目描述 Prefix Sum is a useful trick in data structure problems. For example, given an array A of length n and m queries. Each quer 阅读全文
posted @ 2018-08-21 18:36 xcantaloupe 阅读(492) 评论(0) 推荐(0)