[20250929] BOJ / G4 / 여행가자 / 이강현 #1002
Merged
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🧷 문제 링크
https://www.acmicpc.net/problem/1976
🧭 풀이 시간
30분
👀 체감 난이도
✏️ 문제 설명
1부터 N까지의 여행지를 여행계획이 주어질 때 갈 수 있는지 여부 판단.
예를 들어 1,2,3을 가야할때, 1->3->1->2도 갈 수 있다고 가정.
🔍 풀이 방법
BFS
그냥 시작지점에서 BFS 돌려서 방문하는 곳 다 Set에 넣어서 여행계획이 그 Set 안에 있는지 판단하는 것으로 구현함. 분리집합도 생각해볼 수 있을 것 같음.
⏳ 회고
여행계획을 M으로 받아야하는데 N으로 받아놓고 왜 안되지 이러고 있었음.
문제를 풀면 늘어야하는데 왜 점점 퇴화하는 건지 모르겠다