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Reference:: The Hobbit : Desolation of Smaug http://en.wikipedia.org/wiki/The_Hobbit:_The_Desolation_of_Smaug J. R. R. Tolkien decided to make Thorin Oakenshield’s task more difficult. This time he was given an infinite number of keys represented by a small string. The hidden entrance has a lot of keyholes side by side represented by one long string. The key fits only into a slit that matches

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solution.cppC++17

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