Trace of a matrix

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Given a 2D-Square matrix of order *N*, Find the trace of the matrix ### Input - The first line consists the order of the square matrix *N*. - Next *N* lines represents each row of the matrix , each line contains of *N* values. ### Output Output the Trace of the square matrix ### Constraints - $1 \leq N \leq 1000$ - The output is guaranteed to be less than (2^31) -1 ### Subtasks - **Subtask 1 (

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solution.cppC++17

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