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🧷 문제 링크
https://www.acmicpc.net/problem/1707
🧭 풀이 시간
40분
👀 체감 난이도
✏️ 문제 설명
그래프가 이분 그래프인지 판별하는 문제
이분 그래프는 정점을 두 그룹으로 나눴을 때, 같은 그룹 내의 정점끼리는 인접하지 않는 그래프를 의미
🔍 풀이 방법
BFS를 이용한 그래프 색칠
각 정점을 1 또는 -1로 색칠하며 탐색
-> 인접한 정점은 반대 색, 정점이 같은 색이면 이분 그래프가 아님
⏳ 회고
쉽다