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C. Jzzhu and Chocolatetime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputJzzhu has a big rectangular... 阅读全文
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B. Jzzhu and Sequencestime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputJzzhu has invented a kind o... 阅读全文
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A. Jzzhu and Childrentime limit per test1 secondmemory limit per test256 megabytesinputstandard inputoutputstandard outputThere are n children in Jzzh... 阅读全文
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Arithmancy is Draco Malfoy's favorite subject, but what spoils it for him is that Hermione Granger is in his class, and she is better than him at it. ... 阅读全文
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The Triwizard Tournament's third task is to negotiate a corridor of many segments, and reach the other end. The corridor is N segments long. The ith s... 阅读全文