/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
public static void main (String[] args) throws java.lang.Exception
    {
        String string = "123hh h3ll0 w0rld";

        int count = 0;
        boolean inDigits = false;
        for (int i = 0; i < string.length(); i++)
        {
            char c = string.charAt(i);

            if (Character.isDigit(c)) {
            	if (!inDigits) count++;
            	inDigits = true;
            } else {
            	inDigits = false;
            }
        }

        System.out.println(count);

    }
}