// File GraphMat.h
#ifndef GRAFO_MA_H
#define GRAFO_MA_H
#include "Graph.h"

class GraphMat : public Graph 
{public:
  GraphMat(int s) : Graph(s);
  ~GraphMat();
  GraphMat(const GraphMat&);
  GraphMat& operator=(const GraphMat&);
  bool is_arc(int i, int j) { return mat[i][j]; }
  void add_arc(int i, int j) { mat[i][j] = true; }
  void del_Arc(int i, int j) { mat[i][j] = false; }
 protected:
  bool **mat;
};
#endif