[20251116] BOJ / P5 / 최솟값 찾기 / 이강현 #1424
Merged
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🧷 문제 링크
https://www.acmicpc.net/problem/11003
🧭 풀이 시간
60분
👀 체감 난이도
✏️ 문제 설명
N개의 숫자가 주어짐. 그 숫자에서 L만큼 이전 값까지 범위중 최솟값을 찾는 문제.
🔍 풀이 방법
덱
덱의 꼭대기가 항상 최솟값이 되게끔 유지하는 것이 핵심.
새로운 값을 뒤에서부터 넣는데 그 크기가 더 크다면 제거함.
덱의 꼭대기 값은 현재 지점에서 L만큼 이전까지만 유의미하므로 인덱스가 벗어난 경우에 제거.
⏳ 회고
덱을 monotone하게 유지한다는 것을 조금 이해한것 같다.