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DescriptionGigel has a strange "balance" and he wants to poise it. Actually, the device is different from any other ordinary balance. ... 阅读全文
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Problem DescriptionAfter months of hard working, Iserlohn finally wins awesome amount of scholarship. As a great zealot of sneakers, h... 阅读全文
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Problem DescriptionACboy has N courses this term, and he plans to spend at most M days on study.Of course,the profit he will gain from... 阅读全文
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DescriptionThe cows are going to space! They plan to achieve orbit by building a sort of space elevator: a giant tower of blocks. They... 阅读全文