2018年2月13日
Codeforces 28B. pSort （并查集）
摘要： One day n cells of some array decided to play the following game. Initially each cell contains a number which is equal to it's ordinal number (startin 阅读全文
posted @ 2018-02-13 18:00 hinata_hajime 阅读(293) 评论(0) 推荐(0) 编辑