import java.io.*;
import java.util.*;
import java.util.regex.Pattern;
import java.util.regex.Matcher;

public class Solution {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        // Pattern pattern = Pattern.compile("\\d\\d\\D\\d\\d\\D\\d\\d\\d\\d");     \\WORKS
        Pattern pattern = Pattern.compile("(\\d{2}\\D){2}\\d{4}");
        Matcher matcher = pattern.matcher(scanner.next());
        boolean found = matcher.find();
        System.out.println(found);
    }
}