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Vasya’s house is situated in a forest, and there is a mushroom glade near it. The glade consists of two rows, each of which can be divided into n cons 阅读全文
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Mayor’s posters Description The citizens of Bytetown, AB, could not stand that the candidates in the mayoral election campaign have been placing their 阅读全文
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Description Building and maintaining roads among communities in the far North is an expensive business. With this in mind, the roads are build such th 阅读全文
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Quoit Design Problem Description Have you ever played quoit in a playground? Quoit is a game in which flat rings are pitched at some toys, with all th 阅读全文
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Now give you an string which only contains 0, 1 ,2 ,3 ,4 ,5 ,6 ,7 ,8 ,9.You are asked to add the sign ‘+’ or ’-’ between the characters. Just like giv 阅读全文