Description: Description of the problem: the page of a book from the natural number 1 until the beginning of coding sequence of natural number n. Book in accordance with the usual habits of page layout, each page are the leading non-redundant number of 0. For example, on page 6 with the number 6 that, rather than 06 or 006 and so on. Count the number of problem calls for a given book' s total page number n, to calculate the total number of books used, respectively, the number of times the number 0,1,2, ..., 9. Programming tasks: Given that the book' s total page 10 hexadecimal integer n (
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