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A bank wishing to use optical character recognition system to automatically read out a check in the account number, account number of each component figures are 7 digital body. An image processing software can be composed of the number of horizontal and vertical segment conversion into ASCII code, respectively, of a vertical bar ' |' and underscore ' _' . You need to design a procedure, the results from the scan conversion of the account that the original, it is assumed that: (1) if the scan conversion of a group of figures all of the right to preserve in digital form and check to satisfy the conditions, the group of figures is the original account (2) 9-digit up to only one lost in the scan conversion right in digital form (3) scan conversion will not introduce a number of additional paragraphs.