Attack on Titans

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Titan is the largest ever threat to the humanity. The humanity have constructed N walls in order to defend their living area from the titans, as illustrated in the figure. All walls are circles centered at the humanity Capital and have strictly increasing radius. Humans live inside the walls. Walls are numbered from 1 to N, from the innermost to the outermost. Wall i has defensive power Di. M wav

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solution.cppC++17

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