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🧷 문제 링크
https://www.acmicpc.net/problem/13168
🧭 풀이 시간
60분
👀 체감 난이도
✏️ 문제 설명
도시 내역과 투어 일정이 주어짐.
투어를 하면서 여러가지 교통수단을 사용할 수 있음.
내일로 쓰면 몇가지 교통수단이 싸짐.
내일로 티켓 사냐 마냐 그거를 판단.
🔍 풀이 방법
도시를 인덱스로 매핑해서 플로이드를 쓰기 쉽도록 변환함.
그리고 플로이드 쓰면 됨.
내일로 티켓 샀을때랑 안샀을때로 분리해서 함.
⏳ 회고
플로이드는 쉬운데, 그걸 사용하도록 잘 변환하는 게 중요했던 것 같다.
그리고 할인율 50퍼인 경우가 있는데, 이것때문에 double 안쓰면 티켓 썼냐 안썼냐 우위 비교가 안되는 테스트 케이스가 있음.
이것때문에 힌트 봄 ㅎ