摘要：
Mitya and Vasya are playing an interesting game. They have a rooted tree with n vertices, and the vertices are indexed from 1 to n. The root has index 阅读全文
posted @ 2019-01-06 22:14
nimphy
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摘要：
Misha walked through the snowy forest and he was so fascinated by the trees to decide to draw his own tree! Misha would like to construct a rooted tre 阅读全文
posted @ 2019-01-06 20:23
nimphy
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