2015年5月18日
CodeForces 544A
摘要： You are given a string q. A sequence of k strings s1, s2, ..., sk is called beautiful, if the concatenation of these strings is string q (formally, s1 阅读全文
posted @ 2015-05-18 22:05 unicoe 阅读(249) 评论(0) 推荐(0) 编辑