Hack The Stack Again

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Problem Description Harshad has a stack of disk, lets call it A, containing 2*N distinct disks. He wants to transfer the disk from stack A to two different stack X and Y each having capacity N. He has to transfer the disks in such a way that he can place the top most disk from A to any one of the stack X or Y, provided they are empty. Your task is to find out the number of ways in which this tran

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solution.cppC++17

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