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Sam loves to spend time on CodeChef, and She’s been participating on the CodeChef for $2$ years in a row. She solves all the problems with perfection, and this year too, she is planning to win. But not everyone likes this. Chef and his friends have decided to win this time at any cost. They come up with the plan of changing Sam's registration number $X$ to disqualify her as she is the most valuab

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solution.cppC++17

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