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🧷 문제 링크
https://www.acmicpc.net/problem/20040
🧭 풀이 시간
20분
👀 체감 난이도
✏️ 문제 설명
n개의 점을 m번 선분으로 이음.
이때 사이클이 처음 생기는 차례를 출력
🔍 풀이 방법
분리 집합
⏳ 회고
말만 번지르르하고 그냥 분리집합이었음.
이어진 선분을 다시 잇는 경우 분리집합으로 안풀리는 경우를 고려해서 좀 깊게 생각했는데 문제 조건에 이어진 선분은 다시 안 잇는다고 되어있었음. 문제를 잘 읽자.