[BOJ] 아기상어2 / 실버2 / 50분#79
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다현님, 코드 잘 봤습니다. dist 배열을 -1로 초기화해서 visited와 상어 위치를 합친 아이디어가 정말 좋네요. 이 아이디어 덕분에 map배열을 생략해서 메모리를 줄일 수 있을 것 같습니다! 마지막에 ans를 구할 때 이중 for문을 다시 돌리기보다, BFS안에서 ans = Math.max(ans, dist[x][y]) 형태로 거리를 구할 때 마다 최댓값을 저장하면 for문 한 바퀴를 줄일 수 있을 것 같습니다. |
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