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KingdomProblem DescriptionTeacher Mai has a kingdom consisting of n cities. He has planned the transportation of the kingdom. Every pair of cities has... 阅读全文
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D. Little Pony and Harmony Chesttime limit per test4 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputPrincess Twiligh... 阅读全文
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D. Count Good Substringstime limit per test2 secondsmemory limit per test256 megabytesinputstandard inputoutputstandard outputWe call a stringgood, if... 阅读全文
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2048Problem DescriptionTeacher Mai is addicted to game 2048. But finally he finds it's too hard to get 2048. So he wants to change the rule:You are gi... 阅读全文