[20250620] BOJ / G4 / 친구비 / 김수연 #374
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🧷 문제 링크
https://www.acmicpc.net/problem/16562
🧭 풀이 시간
30분
👀 체감 난이도
✏️ 문제 설명
친구의 친구는 친구일 때, 준석이가 가장 비용으로 모든 사람과 친구가 되는 최소비용 구하기
🔍 풀이 방법
union-find 를 사용해서 친구비가 가장 적은 친구를 선택해서 해당 친구로 연결된 친구들의 parent를 바꿔줌
parent는 친구비가 가장 작은 친구의 index로 초기화
⏳ 회고
알고리즘..하기 실타