摘要: JZOJ5520 Every one will meet some difficult 原题TCO2013 3A TrichyInequality Description 满足$\sum\limits_^m \le S 且 \forall i, a_i > 0, \forall i \le n, a 阅读全文
posted @ 2019-04-10 08:09 tkandi 阅读(320) 评论(0) 推荐(0) 编辑