package Sun26062011;

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

public class ProblemA
{
    public static void main(String[] args) throws FileNotFoundException
    {
        Scanner sc = new Scanner(new File("src/Sun26062011/ProbAText.txt"));

        ArrayList<String> inpLst = new ArrayList<String>();

        while(sc.hasNext())
        {
            String s = sc.next();

            if(!s.equals("-1"))
            {
                inpLst.add(s);
            }
        }

        for (int i = 0 ; i < inpLst.size() ; i++)
        {
            String s = inpLst.get(i);
            if(checkAlone(s) || checkSimilar(s) || checkSort(s) || checkPalindrome(s) || checkTwin(s) || checkPerfect(s))
            {
                System.out.println(s);
            }
        }
    }

    private static boolean checkPerfect(String s)
    {
        if(s.length()<3)
        {
            return false;
        }

        double a = Double.parseDouble(s);

        if(a/100==Math.floor(a/100))
        {
            return true;
        }
        return false;
    }

    private static boolean checkTwin(String s)
    {
        if(s.length()!=4)
        {
            return false;
        }
        else
        {
            if(s.substring(0 , 2).equals(s.substring(2)))
            {
                return true;
            }
            return false;
        }
    }

    private static boolean checkPalindrome(String s)
    {
        if(s.length()<3)
        {
            return false;
        }

        int half = (int)Math.floor(s.length()/2);

        for (int i = 0 ; i < half ; i++)
        {
            if(s.charAt(i)!=s.charAt(s.length()-1-i))
            {
                return false;
            }
        }
        return true;
    }

    private static boolean checkSort(String s)
    {
        char c = s.charAt(0);
        boolean boolA = true;
        boolean boolB = true;

        if(s.length()<3)
        {
            boolA = boolB = false;
        }

        for (int i = 1 ; i < s.length() && boolA ; i++)
        {
            if((c+1)==s.charAt(i))
            {
                c = s.charAt(i);
            }
            else
            {
                boolA = false;
                break;
            }
        }

        for (int i = 1 ; i < s.length() && boolB ; i++)
        {
            if((c-1)==s.charAt(i))
            {
                c = s.charAt(i);
            }
            else
            {
                boolB = false;
                break;
            }
        }

        return boolA || boolB;
    }

    private static boolean checkSimilar(String s)
    {
        if(s.length()<2)
        {
            return false;
        }

        for (int i = 1 ; i < s.length() ; i++)
        {
            if(s.charAt(0)!=s.charAt(i))
            {
                return false;
            }
        }

        return true;
    }

    private static boolean checkAlone(String s)
    {
        return (s.length() == 1) ? true : false;
    }
}