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Chef was preparing for an interview. He selected some questions according to his convenience. In order to prepare well, He decided to arrange the questions into a sequential way. The sequential way is ciqj (c for chapter and q for question) where i=1,2,3… and j=1,2,3…. Your task is to arrange the questions according to their chapter number and then question number. Input First line of input

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solution.cppC++17

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