2016年8月3日
hdu5790 Prefix(Trie树+主席树)
摘要： Problem DescriptionAlice gets N strings. Now she has Q questions to ask you. For each question, she wanna know how many different pref... 阅读全文
posted @ 2016-08-03 19:18 Herumw 阅读(227) 评论(0) 推荐(0) 编辑