More Friends

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In the era of online examination with little proctoring, cheating has become commonplace. It is known that if two people are friends with each other, they will share all the answers they solve themselves or receive from somewhere else, and hence get the same marks. The number of students enrolled in a course $N$, as well as all the number of existing friendships $F$ are known. Paul is a stud

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solution.cppC++17

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