class Stupida{

/*
    public static boolean stupida( String s ){

        return stupida( s );
    }
*/
    public static boolean stupida( String s ){

        System.out.println( s );
        
        return (s.equals("")) ? true : stupida( s.substring(1) );
    }
    
    public static boolean palindroma( String s ) {
    
    return (s == null) ? false : palindromaRIC( s.toUpperCase() );
    }

    private static boolean palindromaRIC( String s ) {
    
    return s.length() <= 1 ||
    
           ( s.charAt( 0 ) == s.charAt( s.length() - 1 ) &&
             palindromaRIC( s.substring( 1, s.length() - 1 )) );
    }

    public static void main( String[] aaa ) {

//        System.out.println( stupida( aaa[ 0 ] ) );

        System.out.println( palindroma( aaa[ 0 ] ) );
    }
}