In and Out

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Mathematics Teacher asked Sam to look after the class for a while and do not let anyone leave the class as "CR Nandu" is absent.Teacher is taking a lot of time into his work and students are getting impatient.So Sam allows students to go one by one out of class to get refreshed.But students are not listening to Sam and going in and out from the class. So Sam started noticing the Roll Numbers of S

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solution.cppC++17

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