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💿 풀이 문제
#239
📝 풀이 후기
풀만했습니다.
📚 문제 풀이 핵심 키워드
dfs로 탐색한 곳을 들어가지 않고, color로 새로이 들어가는 값은 현재 color에서 -1을 곱해서
서로 다른 값을 같도록 하게 설정함. 그리고, 탐색할 정점이 이미 color가 있다면, 탐색할 정점의 color와 현재 color가 같으면
이분 그래프가 아님을 구현함
🧑💻 제출자 확인 사항