Magician versus Chef 2

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The last time in Byteland, Chef defeated the magician in his challenge and won a gold coin. The magician does not want to give up his coin so easily, so he gives Chef $N$ coins. One of them is real and the remaining $N-1$ are fake; all fake coins have equal weights, different from the weight of the real coin. The coins are otherwise indistinguishable. Chef has to find the real coin by himself. T

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solution.cppC++17

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