using System;

public class Barman {
 public int NumberOfBottlesAtTheBegining;
 public int CurrentNumberOfBottles;
 BDChannel barmanChannel;

 public Barman( int numberOfBottles ) {
  this.NumberOfBottlesAtTheBegining = numberOfBottles;
  this.CurrentNumberOfBottles = numberOfBottles;
  barmanChannel = new BDChannel();
 }

 public int HowManyBottlesOnTheWall() { // Ask the barman - How many bottles are left on the wall?
  HowManyBottlesLeft ! ();
  return (int) barmanChannel.Receive() [0];
 }

 public void AnswerHowManyBottlesLeft() & Channel HowManyBottlesLeft() {
  barmanChannel.Send( CurrentNumberOfBottles );
 }

 public void TakeOneDown() & Channel PassOneAround( string replicaFromSinger ) {
  Console.WriteLine( replicaFromSinger );
  CurrentNumberOfBottles--;

  if ( CurrentNumberOfBottles > 0 )
   Console.WriteLine( "Take one down and pass it around, {0} bottles of beer on the wall.", CurrentNumberOfBo