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Description Assume the coasting is an infinite straight line. Land is in one side of coasting, sea in the other. Each small island is a point locating 阅读全文
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Description The game “The Pilots Brothers: following the stripy elephant” has a quest where a player needs to open a refrigerator. There are 16 handle 阅读全文
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Problem Description RSA is one of the most powerful methods to encrypt data. The RSA algorithm is described as follow:> choose two large prime integer 阅读全文
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Problem Description 要求(A/B)%9973，但由于A很大，我们只给出n(n=A%9973)(我们给定的A必能被B整除，且gcd(B,9973) = 1)。 Input 数据的第一行是一个T，表示有T组数据。每组数据有两个数n(0 <= n < 9973)和B(1 <= B <= 阅读全文