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Description A restaurant received n orders for the rental. Each rental order reserve the restaurant for a continuous period of time, the i-th order is 阅读全文
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Description Heidi has finally found the mythical Tree of Life – a legendary combinatorial structure which is said to contain a prophecy crucially need 阅读全文
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Description The zombies are gathering in their secret lair! Heidi will strike hard to destroy them once and for all. But there is a little problem... 阅读全文
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Description Further research on zombie thought processes yielded interesting results. As we know from the previous problem, the nervous system of a zo 阅读全文
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Description "The zombies are lurking outside. Waiting. Moaning. And when they come..." "When they come?" "I hope the Wall is high enough." Zombie atta 阅读全文
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Description One particularly well-known fact about zombies is that they move and think terribly slowly. While we still don't know why their movements 阅读全文
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Description Tonight is brain dinner night and all zombies will gather together to scarf down some delicious brains. The artful Heidi plans to crash th 阅读全文
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Description Little Joty has got a task to do. She has a line of n tiles indexed from 1 to n. She has to paint them in a strange pattern. An unpainted 阅读全文
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Description The girl Taylor has a beautiful calendar for the year y. In the calendar all days are given with their days of week: Monday, Tuesday, Wedn 阅读全文
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Description Johny likes numbers n and k very much. Now Johny wants to find the smallest integer x greater than n, so it is divisible by the number k. 阅读全文