@Override
	public void advanceMinute() {
		for (int i = 0; i < tellers; i++) {
			servingClients.get(i).servedMinute();
		}
		for (int i = 0; i < tellers; i++) {
			if (servingClients.get(i).getExpectedServiceTime() <= 0) {
				servingClients.remove(servingClients.get(i));
				if (waitingClients.size() < 0) {
					servingClients.add(waitingClients.get(0));
					waitingClients.remove(waitingClients.get(0));
				}
			}
		}
	}