합 25 - 문제

#22777. 합 25

통계

이 문제는 다음 대회에서 사용되었습니다:

USACO 2001 Winter Open Contest (Orange)

숫자 7개($0 \le \text{each digit} \le 9$; 각각 0부터 9)를 읽고 일부를 골라 합이 25가 되는 방법 수를 세세요. 숫자 0은 0이 아닌 10을 뜻합니다.

다음 입력은:

5 0 1 5 4 3 7

합이 25인 서로 다른 다섯 선택을 만듭니다:

        5 0       3 7
        5   1 5 4 3 7
        5 0 1 5 4
          0 1   4 3 7
          0   5   3 7

입력

한 줄에 한 자리 정수 일곱 개.

출력

합이 25인 부분집합 수를 한 줄에 출력.

예제

입력 1

5 0 1 5 4 3 7

출력 1

문제 제공: Don Piele, 1982.

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