2020年9月21日
Codeforces Round #671 (Div. 2) C. Killjoy
摘要： 题目原文 A new agent called Killjoy invented a virus COVID-2069 that infects accounts on Codeforces. Each account has a rating, described by an integer (i 阅读全文
posted @ 2020-09-21 21:56 一段时光 阅读(232) 评论(0) 推荐(0)