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Description
Problem
Solution || Flow
객체는
tree와parents두개를 썼고우선
tree에 각 노드마다 연결된 노드의 배열을 만들어서 삽입해주고나중에 1번노드부터 해당 노드의 배열을 하나씩 dfs로 탐색을 하고
parents에 그 값을 넣어 주었습니다.트리의 경우에는 사이클이 없어서 dfs로 해도 상관 없다고 하네요!