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🧷 문제 링크
https://school.programmers.co.kr/learn/courses/30/lessons/64064
🧭 풀이 시간
30분
👀 체감 난이도
✏️ 문제 설명
아이디 중 일부 문자를 *문자로 가려서 전달할 때,
당첨에서 제외되어야 할 제재아이디 목록은 몇가지 경우릐 수가 가능한지 구하기
🔍 풀이 방법
dfs사용
HashSet에 가능한 경우들 저장해두고, dfs 돌림
마지막에 check함수로 원하는 결과와 일치여부 확인하고 result에 넣어주기
⏳ 회고
dfs 오랜만