One-Way Roads

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A city has a road network with all roads arranged in a **K** x **K** square grid, with intersections (total (**K**+1) x (**K**+1)) numbered as shown below (for an example 4 x 4 grid). ![Grid](//www.codechef.com/download/grid_kgp.png) There are no one-way roads in the city now. For ease of movement of cars, the traffic department plans to convert all roads to one-way, while ensuring that any inte

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solution.cppC++17

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