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##题面 In the year 8888, the Earth is ruled by the PPF Empire . As the population growing , PPF needs to find more land for the newborns . Finally , PPF 阅读全文
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#题面 Problem Description There is a strange lift.The lift can stop can at every floor as you want, and there is a number Ki(0 ⇐ Ki ⇐ N) on every floor. 阅读全文
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##题面 Problem Description Given a specified total t and a list of n integers, find all distinct sums using numbers from the list that add up to t. For 阅读全文
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##题面 Problem Description FatMouse has stored some cheese in a city. The city can be considered as a square grid of dimension n: each grid location is 阅读全文