摘要: Arithmetic Progressions USACO1.4 An arithmetic progression is a sequence of the form a, a+b, a+2b, ..., a+nb where n=0,1,2,3,... . For this problem, a 阅读全文
posted @ 2017-10-19 21:55 chwhc 阅读(214) 评论(0) 推荐(0) 编辑