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🧷 문제 링크
https://www.acmicpc.net/problem/11404
🧭 풀이 시간
40분
👀 체감 난이도
✏️ 문제 설명
모든 도시의 쌍(A, B)에 대해서 도시 A에서 B로 가는데 필요한 비용의 최솟값 구하기
🔍 풀이 방법
플로이드-워셜 알고리즘을 사용해서 A->B로 갈 때, K 도시를 지나서 가는 거리를 구해서 최솟값을 비교한다.
answer[A][B] = Math.min(answer[A][B], answer[A][k]+answer[k][B]);
⏳ 회고
플로이드-워셜 알고리즘 오랜만에 푼다....