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2018年1月10日

摘要： Problem DescriptionYaoYao is fond of playing his chains. He has a chain containing n diamonds on it. Diamonds are numbered from 1... 阅读全文

posted @ 2018-01-10 17:16 Canopus_wym 阅读(135) 评论(0) 推荐(0) 编辑

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