/* finish this class to implement demo */

public class demoimpl implements demo
{
  public int f(int a0)
    {
	return a0*a0;
    }
  public String h()
    {
	return "hello from server";
    }

  public int randnum(int a0,int a1)
    {
	return a0 + ((int) Math.random()*(a1-a0+1));
    }

}