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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 Specificat 阅读全文
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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 t 阅读全文
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Scientific notation is the way that scientists easily handle very large numbers or very small numbers. The notation matches the regular expression [+- 阅读全文
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Sherlock Holmes received a note with some strange strings: "Let's date! 3485djDkxh4hhGE 2984akDfkkkkggEdsb s&hgsfdk d&Hyscvnm". It took him only a min 阅读全文
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If you are a fan of Harry Potter, you would know the world of magic has its own currency system -- as Hagrid explained it to Harry, "Seventeen silver 阅读全文
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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, wher 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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Given any string of N (>=5) characters, you are asked to form the characters into the shape of U. For example, "helloworld" can be printed as: That is 阅读全文
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This time you are asked to tell the difference between the lowest grade of all the male students and the highest grade of all the female students. Inp 阅读全文
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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 door 阅读全文