Magic Board

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Long long ago, there is a magic board. The magic board has N*N cells: N rows and N columns. Every cell contains one integer, which is 0 initially. Let the rows and the columns be numbered from 1 to N. There are 2 types of operations can be applied to the magic board: - RowSet i x: it means that all integers in the cells on row i have been changed to x after this operation. - ColSet i x: it mean

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solution.cppC++17

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