[20250912] PGM / LV2 / 비밀 코드 해독 / 김수연 #877
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🧷 문제 링크
https://school.programmers.co.kr/learn/courses/30/lessons/388352
🧭 풀이 시간
30분
👀 체감 난이도
✏️ 문제 설명
1부터 n까지의 서로 다른 정수 5개가 오름차순으로 정렬된 비밀 코드를 가지고 있고, 이 비밀 코드를 맞혀야 함
m번의 시도마다 서로 다른 5개의 정수를 입력하면, 그 중 몇 개가 비밀 코드에 포함되어 있는지 알려줄 때,
비밀 코드로 가능한 정수 조합의 개수 구하기
🔍 풀이 방법
단순 dfs
dfs로 가능한 경우들을 list에 저장해두고, size가 5가 되면
check함수를 통해서 m번의 시도에 부합하는 숫자 조합인지 확인함
⏳ 회고
뭔가 복잡하게 생각했는데 단순했음