https://programmers.co.kr/learn/courses/30/lessons/49191 코딩테스트 연습 - 순위 5 [[4, 3], [4, 2], [3, 2], [1, 2], [2, 5]] 2 programmers.co.kr 코드 : from collections import defaultdict def solution(n, results): answer = 0 win_graph = defaultdict(set) # 이긴 선수 lose_graph = defaultdict(set) # 진 선수 for winner, loser in results : win_graph[loser].add(winner) lose_graph[winner].add(loser) for i in range(1,n+1) ..