2017 年 7月 13 日随笔档案 - zhber

2017年7月13日

摘要： Little X has n distinct integers: p1, p2, ..., pn. He wants to divide all of them into two sets A and B. The following two conditions must be satisfie 阅读全文

posted @ 2017-07-13 23:56 zhber 阅读(334) 评论(0) 推荐(0)

cf701E Connecting Universities

摘要： Treeland is a country in which there are n towns connected by n - 1 two-way road such that it's possible to get from any town to any other town. In Tr 阅读全文

posted @ 2017-07-13 23:26 zhber 阅读(235) 评论(0) 推荐(0)

cf441E Valera and Number

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posted @ 2017-07-13 22:48 zhber 阅读(13) 评论(0) 推荐(0)