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🧷 문제 링크
https://www.acmicpc.net/problem/5557
🧭 풀이 시간
60분
👀 체감 난이도
✏️ 문제 설명
숫자가 주어졌을 때, 상근이가 만들 수 있는 올바른 등식의 수를 구하는 프로그램을 작성하라.
🔍 풀이 방법
상태 정의:$dp[i][j]$ = i번째 숫자에서 j를 만들 수 있는 경우의 수
이전 상태에서 다음 상태를 만들 수 있는 경우의 수를 누적해서 더하면 된다.
⏳ 회고
dp어려워