Philosophers Stone

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*"It takes a great deal of bravery to stand up to our enemies, but just as much to stand up to our friends."* It's a new session in Hogwarts, School Of Witchcraft And Wizardry. Everyone is amazed to see the ever-changing stairs. Hermione, the brightest witch of her age, has read a unique thing about the stairs in a book on Hogwarts History. She had read that if $2$ or more than $2$ students use

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solution.cppC++17

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