We Are Friends

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Their are $N$ Students in the class of a Pizza School of Margarita district. Where Every $i-th$ Student have $i$ Friends, Except the $Nth$ student. $NOTE : -$ Friendship is only possible in between $N$ students of class. Your task is to predict the number of friends that $N-th$ student have. So that the Friendship Network formed by the $N$ students of class form a valid Network. ###Input: - Fi

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solution.cppC++17

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