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🧷 문제 링크
https://www.acmicpc.net/problem/16562
🧭 풀이 시간
30분
👀 체감 난이도
✏️ 문제 설명
친구비를 통해서 친구를 사귀는 준석이가
친구의 친구는 친구다 라는 논리로 친구를 가성비 있게 만들려고 할 때
주어지는 모든 사람을 친구로 만들 때 필요한 최소비용을 구하는 문제입니다.
만약 모두 친구가 될 수 없다면 oh no 라고 출력합니다.
🔍 풀이 방법
bfs를 이용해서 방문하지 않은 노드를 방문하면서
한 묶음에 대한 최소 비용을 도출해서 각각 더했습니다.
⏳ 회고
간단한 그래프 탐색 문제였습니다.