[20251124] BOJ / G4 / 트리의 기둥과 가지 / 이인희#1498
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ShinHeeEul merged 1 commit intomainfrom Nov 24, 2025
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🧷 문제 링크
https://www.acmicpc.net/problem/20924
🧭 풀이 시간
55 분
👀 체감 난이도
✏️ 문제 설명
🔍 풀이 방법
⏳ 회고
a->b 가 주어졌을때, 그래프 자료구조인 List<List<Node>>에 추가할때, b->a 도 추가하지않아서 틀린 것이다.앞으로 무방향인지, 양방향인지 항상 체크하도록하자