Good ranking

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The tennis tournament you organized has just finished and now you have to decide the ranking of the $N$ players (indexed by $1, 2, \dots, N$) who participated. Each pair of players played exactly one game and for each game you know who won (there are no draws in tennis). A ranking is a permutation $P_1, P_2, \dots, P_N$ of $1, 2, \dots, N$; where $P_1$ represents the winner of the tournament, $P_

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solution.cppC++17

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