2017年5月12日
Period HDU - 1358
摘要： For each prefix of a given string S with N characters (each character has an ASCII code between 97 and 126, inclusive), we want to know whether the pr 阅读全文
posted @ 2017-05-12 21:56 天之道，利而不害 阅读(231) 评论(0) 推荐(0) 编辑