static private void simulatedAnnealing(double T, double deltaT)
        {
            new_network = new Model.Network(network);
            while (T > 0)
            {
                new_network.resetEdges();
                foreach (Model.Demand d in new_network.Demands)
                {
                    generateRandomPath(d);
                    d.flow();
                }


                double min_price = network.Price();
                if (network.Price() == 0)
                {
                    min_price = double.MaxValue;
                }
                double ap = acceptanceProbability(new_network.Price(), min_price, T);

                if (new_network.Price() < min_price || ap > generator.NextDouble())
                {
                    Model.Network tmp = network;
                    network     = new_network;
                    new_network = tmp;
                }
                Console.Write("\rMinimalna cena sieci: " + network.Price() + "                 ");
                T -= deltaT;
            }
        }
        static private void simulatedAnnealing(double T, double deltaT)
        {
            new_network = new Model.Network(network);
            while(T>0)
            {
                new_network.resetEdges();
                foreach (Model.Demand d in new_network.Demands)
                {
                    generateRandomPath(d);
                    d.flow();
                }


                double min_price = network.Price();
                if (network.Price() == 0)
                {
                    min_price = double.MaxValue;
                }
                double ap = acceptanceProbability(new_network.Price(), min_price, T);
                
                if (new_network.Price() < min_price || ap > generator.NextDouble())
                {
                    Model.Network tmp = network;
                    network = new_network;
                    new_network = tmp;
                }
                Console.Write("\rMinimalna cena sieci: " + network.Price() + "                 ");
                T -= deltaT;
            }
            
        }