Razo and his mother

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$Razo$ is a brilliant student in maths. One day his mother asked him about his rank in his class, but he didn't like the school's system of ranking so he refused to give the answer. Help Razo's mother to find the rank of his son. School has strange way of ranking the students. They rank students according to $lexicographical$ order of their surnames. Class contains $N+1$ students including R

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solution.cppC++17

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