edge.h

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#ifndef EDGE_H
#define EDGE_H

using namespace std;

class edge
{
public:
    edge(int f, int t, int c);

    bool operator== (const edge &e) const;

    int from;

    int to;

    int cost;
};

struct compare_edge
{
    bool operator() (const edge& a, const edge& b) const;
};

struct hash_edge
{
    size_t operator() (const edge& e) const;
};

#endif // EDGE_H