[20251215] BOJ / G5 / 넴모넴모 (Easy) / 이준희 #1678
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🧷 문제 링크
https://www.acmicpc.net/problem/14712
🧭 풀이 시간
40분
👀 체감 난이도
✏️ 문제 설명
격자 모양의 각 칸에 넴모를 놓거나 안놓거나 할 수 있습니다.
이 때 2*2가 뭉치지 않게 놓을 수 있는 모든 경우의 수를 구하는 문제입니다.
🔍 풀이 방법
백트래킹을 이용해서 모든 경우의 수를 채워가면서
2*2가 아닌 경우만 더해줬습니다.
어차피 현재 상태에서 검증만 하면 됐기 때문에 모든 경우를 다 세도 됐습니다.
⏳ 회고
처음에 예제를 머리로 풀어봤는데 이상하다고 생각했었는데
대각선인 경우를 생각을 안했었습니다