Flash vs QuickSilver

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Flash and QuickSilver challenge each other to a faceoff. They stand at the top of a huge staircase where the steps are numbered from n down to 1. In a single step, they can step down from stair n to stair n-1. Afraid of losing the challenge, flash bribes the judge and figures out a few tricks. If the stair number n is divisible by 2, he can jump directly to stair numbered n/2 in a single step. If

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solution.cppC++17

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