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突然发现百度不到这题的单独题解(果然是因为这是水题么),那我就来写一个了~ 先把题给贴了。 C. Petya and Catacombs time limit per test 1 second memory limit per test 256 megabytes input standard i 阅读全文
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The construction of subway in Bertown is almost finished! The President of Berland will visit this city soon to look at the new subway himself. There 阅读全文
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There is a youngster known for amateur propositions concerning several mathematical hard problems.Nowadays, he is preparing a thought-provoking proble 阅读全文