The battlefield

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The Ministry of Defence (MoD) of Mighty Mouse Kingdom (MMK) needs to arrange defence forces in a battlefield to prevent possible attacks of Catland's army. The battlefield is a square grid of N rows and N columns. The cell in the ith row and jth column is denoted by (i,j), with 0 ≤ i, j ≤ N-1. The MoD wants to put exactly N cannons in cells of the grid. Each cannon can guard all the cells that ar

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solution.cppC++17

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