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🧷 문제 링크
https://www.acmicpc.net/problem/12762
🧭 풀이 시간
30분
👀 체감 난이도
✏️ 문제 설명
N개의 기둥들이 있을때, 내려갔다 올라오는 구간의 길이가 최대가 되는 경우 그 길이를 출력.
🔍 풀이 방법
LIS
왼쪽에서 LDS, 오른쪽에서 LIS를 각각 하고 모든 지점에서 둘의 합이 최대가 되는 것을 구함.
⏳ 회고
좌 우에서 오는 거니까 투 포인터를 생각했는데, 풀어보니 LIS의 전형적인 풀이였다.
나는 바보다.