int main(void) {
igraph_t *graph;
FILE *myfile;
igraph_vector_t *membership;
igraph_vector_t *weights;
igraph_vector_t *initial;
igraph_vector_bool_t *fixed;
int num_nodes;
myfile = fopen("europe.gml", "r");
igraph_read_graph_gml(graph, myfile);
num_nodes = igraph_vcount(graph);
// printf("number of nodes: %f\n", igraph_vcount(graph));
// igraph_community_label_propagation(graph, )
fclose(myfile);
return 0;
}