[20251217] BOJ / G5 / 신기한 소수 / 강신지 #1697
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🧷 문제 링크
https://www.acmicpc.net/problem/2023
🧭 풀이 시간
40분
👀 체감 난이도
✏️ 문제 설명
왼쪽부터 1자리, 2자리, ... 모두 소수인 N자리수를 출력하라.
🔍 풀이 방법
첫번째 자리수는 2, 3, 5, 7만 가능.
숫자를 하나씩 붙여 가며 DFS로 탐색하고, 매 단계에서 만들어진 수가 소수일 때만 다음 자리로 진행.
N자리되면 출력.
⏳ 회고