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Tree of Life (easy) Tree of Life (easy) Heidi has finally found the mythical Tree of Life – a legendary combinatorial structure which is said to conta 阅读全文
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The Wall (medium) The Wall (medium) Heidi the Cow is aghast: cracks in the northern Wall? Zombies gathering outside, forming groups, preparing their a 阅读全文
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Brain Network (medium) Brain Network (medium) Further research on zombie thought processes yielded interesting results. As we know from the previous p 阅读全文
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Brain Network (easy) Brain Network (easy) One particularly well-known fact about zombies is that they move and think terribly slowly. While we still d 阅读全文
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Recover Polygon (easy) Recover Polygon (easy) The zombies are gathering in their secret lair! Heidi will strike hard to destroy them once and for all. 阅读全文
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Friends and Subsequences Friends and Subsequences Mike and !Mike are old childhood rivals, they are opposite in everything they do, except programming 阅读全文
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Dice Possibility Dice Possibility 时间限制:10000ms 单点时限:1000ms 内存限制:256MB 描述 What is possibility of rolling N dice and the sum of the numbers equals to M? 阅读全文
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A Game A Game 时间限制:10000ms 单点时限:1000ms 内存限制:256MB 描述 Little Hi and Little Ho are playing a game. There is an integer array in front of them. They take 阅读全文