public static EDListGraph<Character,Integer> readGraph (Scanner scan) {
        int size = scan.nextInt();
        EDListGraph graph = new EDListGraph(true);

        for(int i = 0; i < size; i++)
            graph.insertNode(scan.next());

        int cont = 0;
        while(scan.hasNextInt()) {
            for(int i = 0; i < size; i++) {
                if(scan.nextInt() == 1) { //Existe enlace
                    EDEdge edge = new EDEdge(cont, i);
                    graph.insertEdge(edge);
                }
            }
            cont++;
        }
        return graph;

    }