Help Nikhar!

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Nikhar is good in maths and he loves to play with numbers and specially with matrices. Now he is solving a new problem. Nikhar has two $n$ × $m$ matrices $A$ and $B$. He wants to make them completely identical, to achieve this goal, he can perform the following actions in a single move: - Take one of the matrices, either $A$ or $B$. - Choose either one row or one column of the selected matrix. -

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solution.cppC++17

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