[20251117] BOJ / G4 / 서울에서 경산까지 / 이강현#1436
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ShinHeeEul merged 1 commit intomainfrom Nov 17, 2025
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우리집이다 |
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🧷 문제 링크
https://www.acmicpc.net/problem/14863
🧭 풀이 시간
120분
👀 체감 난이도
✏️ 문제 설명
서울에서 경산까지 N개의 구간을 자전거 혹은 도보를 통해 갈거임.
가면서 구간마다 모금을 할거임. 이때 이동수단에 따라 모금액이 다름.
K분 이내로 가는데 가장 많은 모금액을 얻도록 할때, 그 모금액을 출력.
🔍 풀이 방법
배낭
배낭문제처럼 풀되, 갈 수 없는 경우의 dp값이 전파되는 것을 꼭 막는 것이 핵심.
⏳ 회고
어차피 K안에 갈 수 있으니 간단하게 풀었는데, 유효하지 않은 dp값을 업데이트시 사용하지 않도록 하는 것이 중요했다.