TNP CHALLENGE 305
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A NxN square matrix is a Latin square if each element in it is one among the N different values, without being repeated within a row or a column. Here you will be handling only "natural Latin squares" in which the N values are the integers between 1 and N including 1 and N. Given a matrix that contains only integers in the interval 1 to N, find its trace and verify if it is such a Latin Square.
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solution.cppC++17
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