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All the students are suffering from a problem called "Lack of money :( ". Now one day Santa has found a bridge consisting of N checkpoints. Each checkpoint have been assigned a character from 'a' - 'z' (lower case alphabets). He was there at the starting of the bridge and the money Bag was there at the end. Any how he wants to reach at the end of the bridge. At each checkpoint a guard was there so

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solution.cppC++17

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