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After iFest'16 was finished Harsh and his team were sitting tired. And they all were exhausted. But as we all know Harsh is workaholic and never sits idle. He always brags about how powerful he is in maths and there is no puzzle that he can't solve. So committee decides to give him a problem and prove that he is wrong. They keep a bet that if he solves this problem all will take him to dinner else

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solution.cppC++17

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