private static Boolean check_solution(Hashtable<String, Tuple<LinkedList<Integer>, Integer>> queues) {
		Boolean solution = true;
		Enumeration<String> words = queues.keys();
		while(words.hasMoreElements()){
			String word = words.nextElement();
			Tuple<LinkedList<Integer>, Integer> tuple = queues.get(word);
			LinkedList<Integer> queue = tuple.get_x();
			int min = tuple.get_y();
			if(queue.size() < min){
				solution = false;
				break;
			}
		}
		return solution;
	}