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Description For an upcoming programming contest, Edward, the headmaster of Marjar University, is forming a two-man team from N students of his univers 阅读全文
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Description A Swiss-system tournament is a tournament which uses a non-elimination format. The first tournament of this type was a chess tournament in 阅读全文
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Description In mathematics, a square number is an integer that is the square of an integer. In other words, it is the product of some integer with its 阅读全文
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Problem Description Sherlock and Watson are playing the following modified version of Nim game: There are n piles of stones denoted as ,,...,, and n i 阅读全文
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Description Several days ago, a beast caught a beautiful princess and the princess was put in prison. To rescue the princess, a prince who wanted to m 阅读全文