using System;

public class Program

{

    public static void Main()

    {

        string str = "76783Iamzalatanibrahimovic10";

        string sandar = "1234567890";

            int counter = 0;

            for (int i = 0; i < str.Length; ++i)

                for (int j = 0; j < sandar.Length; ++j)

                    if (str[i] == sandar[j])

                        ++counter;

            Console.Write(counter);

            Console.ReadLine();

    }

}