[20251123] BOJ / G4 / 이분 그래프 / 이종환 #1486
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🧷 문제 링크
https://www.acmicpc.net/problem/1707
🧭 풀이 시간
30분
👀 체감 난이도
✏️ 문제 설명
그래프의 정점의 집합을 둘로 분할하여, 각 집합에 속한 정점끼리는 서로 인접하지 않도록 분할할 수 있을 때, 그러한 그래프를 특별히 이분 그래프 (Bipartite Graph) 라 부른다.
그래프가 입력으로 주어졌을 때, 이 그래프가 이분 그래프인지 아닌지 판별하는 프로그램을 작성하시오.
🔍 풀이 방법
for문으로 노드를 돌면서 이미 방문한 곳인지 확인한다. 아니라면 bfs방식으로 팀을 반대로 설정하며 진행한다.
이때 연결되어있는 노드간의 팀이 무조건 같은 경우가 있으면 No를 출력하면 된다.
⏳ 회고