Grand Staircase

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Problem description. The grand staircase often known as Hogwarts Staircase, is a massive structure in Hogwarts castle which is a moving staircase and can simply connect any floors at any point of time. Although there are witches and wizards they can’t jump multiple steps they can only take one step at a time. One day Hermione Granger and Harry potter are in hurry to meet professor Dumbledore but

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solution.cppC++17

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