Avani and Magic

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Little Avani had been reading about magical tales a lot. Being fascinated by the power of magic tricks, she decided to learn magic. She bought a book which contained N magic tricks. Each magic trick is described as a string S consisting of characters from the set {a,b,c,d} only. Being very little, she was unable to understand any of the magic tricks. She put a lot of effort to figure out how to us

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solution.cppC++17

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