[20251203] BOJ / G5 / 합분해 / 이종환 #1571
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🧷 문제 링크
https://www.acmicpc.net/problem/2225
🧭 풀이 시간
20분
👀 체감 난이도
✏️ 문제 설명
0부터 N까지의 정수 K개를 더해서 그 합이 N이 되는 경우의 수를 구하는 프로그램을 작성하시오.
덧셈의 순서가 바뀐 경우는 다른 경우로 센다(1+2와 2+1은 서로 다른 경우). 또한 한 개의 수를 여러 번 쓸 수도 있다.
🔍 풀이 방법
전형적인 dp문제이다. O(NNK)로 해결할 수 있다.
⏳ 회고