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题目描述 Description Before bridges were common, ferries were used to transport cars across rivers. River ferries, unlike their larger cousins, run on a g    阅读全文
posted @ 2017-07-08 15:27
小飞淙的云端
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题目描述 Description 给出一个N个点的树,找出一个点来,以这个点为根的树时,所有点的深度之和最大 输入描述 Input Description 给出一个数字N,代表有N个点.N<=1000000 下面N-1条边. 输出描述 Output Description 输出你所找到的点,如果具有    阅读全文
posted @ 2017-07-08 10:17
小飞淙的云端
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