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The Kingdom of Exodiastaan

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There was a kingdom 'Exodistaan' ruled by 'JonSnow'. The kingdom was divided into $n$ x $m$ cities. The cities are arranged in a grid, with $n$ rows of $m$ cities each. Now the ruler 'JonSnow' had a list of enemies (not exceeding 10). The enemies want Exodistaan for themselves, as it is quite popular. Their strategy was to first attack the cities row-wise and then attack column-wise. The enemies a

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solution.cppC++17

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