Decrypt It

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Mikasa has got an encrypted message from one of her friends, since she is too busy with her semester exams, she wants you to decode the message for her. Can you do it? Given that, every character of the encrypted message differs exactly by $k$ times left from its original version. For an Example, if the encrypted message is **"bpd"** and the value of $k$ is $1$, then the original message should

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solution.cppC++17

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