[20250620] BOJ / G4 / 친구비 / 설진영 #375
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🧷 문제 링크
🧭 풀이 시간
25분
👀 체감 난이도
✏️ 문제 설명
친구 친구도 친구일때 친구비 제일 적게 내고 친구되는방법
🔍 풀이 방법
union-find 사용해 친구 그룹 식별,
각 그룹별 가장 적은 친구비용 더하기
⏳ 회고
union-find 알면 쉽게 풀 수 있는듯