SP8668 ITRIX_E - THE BLACK AND WHITE QUEENS

Subru and Shanmu are playing Chess. Shanmu wonder about **queens** . So he asked Subru the following question “_How many ways are there to place a black and a white Queen on an M \* N chessboard such that they do not attack each other?_ _The queen can be moved any number of unoccupied squares in a straight line vertically, horizontally, or diagonally.._” Subru gave the answer in seconds for a given chess board of size M x N (M

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