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Meena and Coins

Meena has a deep interest in coins, especially gold and silver coins. As a collector, he currently has a gold coins and b silver coins. Meena defines a transaction as follows: He sells one gold and one silver coin. He receives one gold and one silver coin. He sells one gold and receives one silver coin. He sells one silver and receives one gold coin. He aspires to make series of transactions such

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solution.cppC++17

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