Cersei and her commands

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Everybody in King’s Landing likes Sword strings. A Sword is a character string which reads the same when read from either directions, such as madam or racecar. Cersei hates such kind of strings and commands The Mountain to find out the longest non-sword substring of the given string. A substring of a string S is a string S' that occurs "in" S. For e.g. “est” is a substring of “best”. Input The f

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solution.cppC++17

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