2022 G.W. Coding Contest 1 S1: Semimagic Squares:

Magic squares are grids with the numbers in each column, each row, and each corner-to-corner diagonal adding up to the same total.

However, a semi-magic square is a magic square, but with any diagonal adding up to a different sum.

Given the length and width \(N\) of a grid, and the grid of numbers, print "yes" if the square is semi-magic, and print "no" if it is not.

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