摘要：
Two mages play the game. Both of them has their own set of creatures. Each creature is characterized by the integer — its strength. At the beginning o 阅读全文
posted @ 2020-07-15 23:46
璃灵
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摘要：
You are given a tree with nn vertices and (n−1)(n−1) edges. At the beginning its edges and vertices are not painted. You can perform the following ope 阅读全文
posted @ 2020-07-15 23:41
璃灵
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There are 4 bars, possibly, having different lengths. Can they be used as the legs of the table, such that: The legs stay vertically in the vertices o 阅读全文
posted @ 2020-07-15 22:06
璃灵
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