[20250716] BOJ / G5 / 강의실 배정 / 김수연 #477
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🧷 문제 링크
https://www.acmicpc.net/problem/11000
🧭 풀이 시간
20분
👀 체감 난이도
✏️ 문제 설명
S에 시작해서 T에 끝나는 N개의 수업이 주어짐.
최소의 강의실을 사용해서 모든 수업이 가능하도록 하는 강의실 수 구하기
🔍 풀이 방법
강의의 시작시간, 종료시간 순서로 오름차순으로 정렬
PriorityQueue 사용해서 가장 앞에 있는 수업의 종료 시각보다 시작 시간이 늦으면 제일 앞 수업 제거 후, 새로운 수업 추가
종료 시각보다 시작 시간이 빠르면 새 강의실 추가
⏳ 회고
방법만 알면 쉽다