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题目 At the beginning of every day, the first person who signs in the computer room will unlock the door, and the last one who signs out will lock the d 阅读全文
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题目 Given a non negative integer N, your task is to compute the sum of all the digits of N, and output every digit of the sum in English. Input Specifi 阅读全文
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题目 A family hierarchy is usually presented by a pedigree tree. Your job is to count those family members who have no child. Input Specification: Each 阅读全文
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题目 As an emergency rescue team leader of a city, you are given a special map of your country. The map shows several scattered cities connected by some 阅读全文
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题目 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 o 阅读全文
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题目 Calculate a+b and output the sum in standard format that is, the digits must be separated into groups of three by commas (unless there are less tha 阅读全文
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题目 People in Mars represent the colors in their computers in a similar way as the Earth people. That is, a color is represented by a 6 digit number, w 阅读全文