import java.util.*;
public class bob
{
    public static void main(String [] args)
    {
        Scanner console = new Scanner(System.in);
        String input = console.next();
        boolean x = isPalindrome(input);
        System.out.print(x);
    }
    public static boolean isPalindrome(String x)
    {
        if(x.length() > 1)
        {
            if(x.charAt(0) == x.charAt(x.length()-1))
            {
                isPalindrome(x.substring(1, x.length() - 2));
                        return true;
            }
            else
            {
                return false;
            }
        }
        return true;

    }
}