2023年4月3日
hdu - 4578(线段树)
摘要： 题目：Yuanfang is puzzled with the question below: There are n integers, a1, a2, …, an. The initial values of them are 0. There are four kinds of operati 阅读全文
posted @ 2023-04-03 20:58 魏老6 阅读(24) 评论(0) 推荐(0) 编辑