public class Map
{
  private double x;
  private double a;

  public void iterate ()
  {
    x = a * x * (1 - x);
    return;
  }

  public double getX ()
  {
  double xdum;
  xdum=((int)(x*1000))/1000.0;
    return (xdum);
  }

  public void setX (double z)
  {
    x = z;
    return;
  }

  public void setA (double z)
  {
    a = z;
    return;
  }

  public double getA ()
  {
    return (a);
  }

}