@Override
	public boolean addClient(Client client) {
		int shortestLineIndex = 0;
		int shortestLineTime = Integer.MAX_VALUE;
		for(int i = 0; i < cashiers; i++){
			int currentLineTime = 0;
			for(int j = 0; j < lines[i].size(); j++){
				currentLineTime += lines[i].get(j).getExpectedServiceTime();
			}
			if(currentLineTime < shortestLineTime){
				shortestLineTime = currentLineTime;
				shortestLineIndex = i;
			}
		}
		lines[shortestLineIndex].add(client);
		return true;
	}