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数字字符
Time Limit:1000MS  Memory Limit:32768K

Description:

有一些字串,需要统计每个字串中有多少个数字字符。

Input:

若干行字串(1<=行长<=100)。

Output:

针对每行输入,输出一行数字字符个数。

Sample Input:

1 sheep, 2 sheep, 3 sheep,......
123 456  7 8 9 ******
Stray birds come to my window to sing.

Sample Output:

3
9
0

Source:

yz
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