/* 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
{
	private static String makeFlag(String str) {
        String str2;
        String str3 = "" + str.charAt(5);
        String str4 = str.charAt(2) + "";
        for (int i = 0; i < str.length(); i++) {
            String str5 = str4.substring(str4.length() - i) + str4.substring(i);
            String str6 = i >= 3 ? str4 + str.charAt(i - 3) + "" : str4 + str.charAt(str.length() - (3 - i)) + "";
            if (i >= str6.length()) {
                str2 = str6 + str.charAt(i - str6.length()) + "";
            } else if (str.length() >= str6.length() - i) {
                str2 = str6 + str.charAt(str.length() - (str6.length() - i)) + "";
            } else {
                str2 = str6 + str.charAt(str.length() - ((str6.length() - i) - str.length())) + "";
            }
            str4 = str2;
            str3 = str3 + str5.charAt((((str.length() + str4.length()) * i) + str4.length()) % str5.length());
        }
        return str3.substring(0, 2) + str.charAt(3) + str3.charAt(3) + '0' + str3.substring(5, 7);
    }

	public static void main (String[] args) throws java.lang.Exception
	{
		System.out.println(makeFlag("1dndr@"));
	}
}