Friends

CodeChefRating 2331Open on judge ↗

After IOI Ilya decided to make a business. He found a social network called "TheScorpyBook.com". It currently has N registered users. As in any social network two users can be friends. Ilya wants the world to be as connected as possible, so he wants to suggest friendship to some pairs of users. He will suggest user u to have a friendship with user v if they are not friends yet and there is a user

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solution.cppC++17

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