摘要: 题意:长度为n的序列,初始都是0,维护3个操作: There are three types of operations: 1. 1 L R w, for each index i ∈ [L,R], change Ai to Ai + w. 2. 2, change A to its prefix 阅读全文
posted @ 2018-08-27 23:18 hzhuan 阅读(238) 评论(0) 推荐(0) 编辑