QOJ.ac

QOJ

时间限制： 2 s 内存限制： 256 MB 总分： 100

#22777. Suma 25

该题目在以下比赛中使用过：

USACO 2001 Winter Open Contest (Orange)

Wczytaj 7 cyfr ($0 \le \text{each digit} \le 9$; każda od 0 do 9) i policz sposoby wyboru zbioru cyfr o sumie 25. Cyfra 0 oznacza 10, nie 0.

To wejście:

5 0 1 5 4 3 7

daje pięć różnych sum równych 25:

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

Wejście

Jeden wiersz z siedmioma jednocyfrowymi całkowitymi.

Wyjście

Jeden wiersz z liczbą podzbiorów o sumie 25.

Przykład

Wejście 1

5 0 1 5 4 3 7

Wyjście 1

Źródło: Don Piele, 1982.

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