std::map<std::string, xbt_node_t>* nodes = new std::map<std::string, xbt_node_t>;
std::map<std::string, xbt_edge_t>* edges = new std::map<std::string, xbt_edge_t>;
std::map<std::string, xbt_node_t>* nodes = new std::map<std::string, xbt_node_t>;
std::map<std::string, xbt_edge_t>* edges = new std::map<std::string, xbt_edge_t>;