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#ifndef GRAPH_H_
#define GRAPH_H_
#define COLOR_WHITE 0
#define COLOR_GRAY 1
#define COLOR_BLACK 2
#define HASHSIZE 128
struct vertex_struct;
// Linked list
typedef struct edge_struct {
int weight;
struct vertex_struct *from;
struct vertex_struct *to;
// Linked list stuff
struct edge_struct *next;
struct edge_struct *prev;
} edge_t;
typedef struct vertex_struct {
char *ref;
int color;
int dist;
struct vertex_struct *p;
edge_t *adj;
// Hash table stuff
struct vertex_struct *next;
} vertex_t;
typedef struct {
vertex_t *hashtable[128];
} graph_t;
int graph_to_dot(FILE *f, graph_t *g);
int graph_from_dot(FILE *f, graph_t *g);
int graph_print_adj(graph_t *g, char *ref);
void graph_edge(graph_t *g, char *from, char *to, int weight);
edge_t *edge_next(graph_t *g, edge_t *e);
vertex_t *vertex_next(graph_t *g, vertex_t *v);
#endif // GRAPH_H_
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