求和 25 - Problem

#22777. 求和 25

İstatistikler

編程讀入 7 個數字（$0 \le \text{each digit} \le 9$；每個數字介於 0 至 9），統計選出數字集合使和為 25 的方案數。數字 0 表示 10，絕非 0。

對於輸入：

5 0 1 5 4 3 7

有五種不同的和為 25 的選擇：

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

輸入格式

一行七個一位整數。

輸出格式

一行，表示和為 25 的子集數。

範例

輸入格式 1

5 0 1 5 4 3 7

輸出格式 1

題目來源：Don Piele，1982。

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