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Shopping in Mars is quite a different experience. The Mars people pay by chained diamonds. Each diamond has a value (in Mars dollars M$). When making ... 阅读全文
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A number that will be the same when it is written forwards or backwards is known as a Palindromic Number. For example, 1234321 is a palindromic number... 阅读全文
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There is a public bike service in Hangzhou City which provides great convenience to the tourists from all over the world. One may rent a bike at any s... 阅读全文
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http://arena.acmclub.com/problem.php?id=26850数码世界的国王Shoutmon想要在n个小岛上举办一个游戏，来让数码宝贝们好好玩耍。背景是这样的：在这n个小岛之间事先安放了一些单向通道，每个通道连接两个不同的小岛，且只能按一个给定的方向通过。数码宝贝每次由通... 阅读全文
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A long-distance telephone company charges its customers by the following rules:Making a long-distance call costs a certain amount per minute, dependin... 阅读全文
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Suppose a bank has N windows open for service. There is a yellow line in front of the windows which devides the waiting area into two parts. The rules... 阅读全文
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With the 2010 FIFA World Cup running, football fans the world over were becoming increasingly excited as the best players from the best teams doing ba... 阅读全文
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Given a pair of positive integers, for example, 6 and 110, can this equation 6 = 110 be true? The answer is "yes", if 6 is a decimal number and 110 is... 阅读全文
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This time, you are supposed to find A*B where A and B are two polynomials.Input Specification:Each input file contains one test case. Each case occupi... 阅读全文
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The highest building in our city has only one elevator. A request list is made up with N positive numbers. The numbers denote at which floors the elev... 阅读全文