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PR Summary
<문제 회고>
직접 도형을 그려보며 각 경우에 대한 경우의 수를 구하고 규칙을 찾으려고 했으나 마름모로 인해 복잡해져 머리가 꼬였다. 공식 풀이를 확인해보니 사다리꼴 중 윗 변에 해당하는 삼각형을 어떤 도형을 활용해서 덮느냐에 따라 경우를 간소화할 수 있음을 알게 되었다. 사실상 본 풀이를 코드로 옮긴 것일 뿐이기에 아쉬움이 드는 문제였다. 다음에 한 번 더 풀어보면 좋을 거 같다.
코드의 시간복잡도는 O(n)임에도 불구하고 시간초과가 났다. 아마 파이썬이 느려서...