2018年4月22日
[数论][组合数学]fireworks
摘要： Problem Description Hmz likes to play fireworks, especially when they are put regularly.Now he puts some fireworks in a line. This time he put a trigg 阅读全文
posted @ 2018-04-22 22:04 l..q 阅读(259) 评论(0) 推荐(0)