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Soldier
Description There are k soldiers placed on an n-row and m-column chessboard. It is allowed that more than one soldier are placed on the same grid. If the Manhattan distance between a grid(in ath row and bth column) and a soldier(in xth row and yth column), |x-a|+|y-b|, is not larger than the control range of that soldier, then the grid will be controlled. Could you tell the total number of all the controlled grids? Input Output Sample Input Sample Output Source |
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