Let us play with rank list

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A rank list is a list of ranks of persons in a programming contest. Note that some of the persons might be having same rank. {1, 2}, {1, 2, 2} and {1, 1, 2, 3, 4, 4} are few examples of rank lists whereas {1, 3}, {0, 2}, {1, 2, 4} are not rank lists. Also note that a rank list need not to be sorted e.g. {2, 2, 1} and {3, 3, 2, 1} are valid rank lists. Mathematically, a rank list is an array of

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solution.cppC++17

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