typedef union  {
	node	*y_node;
	Cost	y_cost;
	char	y_net;
	char	*y_name;
	struct {
		node *ys_node;
		Cost ys_cost;
		short ys_flag;
		char ys_net;
		char ys_dir;
	} y_s;
} YYSTYPE;
extern YYSTYPE yylval;
# define SITE 257
# define HOST 258
# define STRING 259
# define COST 260
# define NET 261
# define EOL 262
# define PRIVATE 263
# define DEAD 264
# define DELETE 265
# define FILETOK 266
# define ADJUST 267