Decode It

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Coordinates to an undercover submarine are sent using an encryption method called INNOVASIONE. Here, each number is decoded as the length of a string S formed from a message M. The string S always consists of two distinct alternating letters. For example, if string S's two distinct letters are a and b, then S could be ababa or babab but not abba or baab. You can convert some message M to string S

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solution.cppC++17

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