public class pozneg {
  public void prog( String args[] ) {
    int x;
    try {
      x = Integer.parseInt( args[0] );
    } catch( NumberFormatException ex ) {
      System.out.println( args[0]+" nem kiertekelheto" ); 
      return;
    } 
    if( x < 0 )
      System.out.println( x+" negativ" );
    else
    if( x == 0 )
      System.out.println( "Nulla" );
    else
      System.out.println( x+" pozitiv" ); 
  }

  public static void main( String args[] ) {
    pozneg e = new pozneg();
    e.prog( args );
  }
}