摘要: 比赛链接: Codeforces Round #626 (Div. 2, based on Moscow Open Olympiad in Informatics) D.Present 题意: 给定大小为$n$的a数组,求下面式子的结果: $$ (a_1 + a_2) \oplus (a_1 + a 阅读全文
posted @ 2020-03-08 13:28 czh~ 阅读(490) 评论(0) 推荐(1) 编辑