Cups and Balls

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Ram is playing a game where there are exactly N cups numbered 1 to N in a row in front of him and he has balls numbered from 1 to N with him. In this game his opponent gives him a number K(0 If the balls arranged in the row are numbered a1, a2, a3, .... an then a cup is good if |ai - i| = 1. Ram is a mathematician so, he is thinking the total number of ways he can arrange the balls in the cups su

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solution.cppC++17

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