摘要：
Some company is going to hold a fair in Byteland. There are nn towns in Byteland and mm two-way roads between towns. Of course, you can reach any town 阅读全文
posted @ 2019-02-04 12:33
EchoZQN
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A tournament is a directed graph without self-loops in which every pair of vertexes is connected by exactly one directed edge. That is, for any two ve 阅读全文
posted @ 2019-02-04 10:17
EchoZQN
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There is a rectangular grid of size n×mn×m . Each cell has a number written on it; the number on the cell (i,ji,j ) is ai,jai,j . Your task is to calc 阅读全文
posted @ 2019-02-04 09:41
EchoZQN
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