import java.util.Random;

public class Die
{
  private static Random generator = new Random();
  
  private int numberOfSides;
  
  public Die()
  {
    numberOfSides = 6;
  }
  
  public Die( int sides )
  {
    numberOfSides = sides;
  }
  
  public int roll()
  {
    int randomValue = generator.nextInt( numberOfSides );
    return randomValue + 1;
  }
  
  // ----- main method to simulate a pair of dice
  
  public static void main( String[] args )
  {
    Die d1 = new Die();
    Die d2 = new Die();
    System.out.println( d1.roll() + d2.roll() );
  }
}