Chef and Tikna

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Chef and Tikna are good friends and both of them like to solve problems. They both are going to participate in ACM ICPC this year. Tikna is very good at mathematical problems but not with strings based problems. Chef was given this problem by him .In the problem a string is given which consist of distinct lower case alpahabets. The task is to calculate all possible strings which can be formed fr

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solution.cppC++17

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