[20250624] BOJ / G5 / 트리와 쿼리 / 이강현 #383
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🧷 문제 링크
https://www.acmicpc.net/problem/15681
🧭 풀이 시간
30분
👀 체감 난이도
✏️ 문제 설명
트리가 주어지고 특정 노드가 주어질때, 그 노드를 루트로 하는 서브트리 노드의 개수를 출력
🔍 풀이 방법
재귀, 그래프 탐색
기존 트리에서 루트부터 재귀적으로 자신이 가지는 자식 노드들의 개수를 합하여 저장해둠.
⏳ 회고
ez