readgr

	Graph graph;
	std::string line;
	std::stringstream iss;
	Graph::Position position;
	double x, y, z = -1;
	while(!std::cin.eof())
	{
		getline(std::cin, line);
		if(line.length() != 0)
		{
			iss << line;
			iss >> x;
			iss >> y;
			iss >> z;
			if(z<0)
			{
				position.x = x;
				position.y = y;
				graph.addVertex(position);
			}
			else
			{
				graph.addEdge(x, y, z);
			}
		}
		iss.clear();
		line = "";
	}

//-------------------------------------------------------------------------
/*
	//int a, b;
	//double c;
	getline(std::cin, line);
	unsigned number_of_spaces;
	number_of_spaces = std::count(line.begin(), line.end(), ' ');
	while (number_of_spaces == 1)
	{
		iss << line;
		iss >> x;
		iss >> y;
		position.x = x;
		position.y = y;
		graph.addVertex(position);
		getline(std::cin, line);
		number_of_spaces = std::count(line.begin(), line.end(), ' ');
		iss.clear();
	}
	while (std::cin)
	{
		iss << line;
		iss >> a;
		iss >> b;
		iss >> c;
		graph.addEdge(a, b, c);
		getline(std::cin, line);
		iss.clear();
	}
*/
//---------------------------------------------------------------------------