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摘要: 题目传送门 题目描述 Problem Description YaoYao is fond of playing his chains. He has a chain containing n diamonds on it. Diamonds are numbered from 1 to n.At 阅读全文
posted @ 2018-04-17 20:06 HolseLee 阅读(175) 评论(0) 推荐(0) 编辑