include [HTML_REMOVED]
include [HTML_REMOVED]
include [HTML_REMOVED]
using namespace std;
int main()
{
char a[100];
fgets(a, 101, stdin);
int cnt = 0;
for (int i = 0;a[i]; i) {
if (a[i] >= 48 && a[i] <= 57)cnt;
}
cout << cnt;
}