[20251030] BOJ / G4 / 빠른 무작위 메시지 전달 / 김민진 #1271
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🧷 문제 링크
빠른 무작위 메시지 전달
🧭 풀이 시간
30분
👀 체감 난이도
✏️ 문제 설명
12명의 사람이 있고 친구 그룹
(i, i+1)으로 구성됨한 그룹에서 다른 그룹으로 메시지를 전달하는데 한 그룹 내에서 메시지를 전달 받은 사람은 그룹의 다른 사람에게 전달하고 메시지를 전달 받은 사람이 다른 그룹에 메시지를 전달함
메시지를 전달할 수 있는 최소 비용
🔍 풀이 방법
백트래킹
⏳ 회고
그룹 내에서도 메시지 전달 비용이 든다.. 문제를 잘 읽자
그리고
next → next + 1을 했으면 다음 시작점은next + 1인데next로 해놔서 계속 틀렸음