public static int findOre (List<Grid> G, robot myRobot)
    {
        int index = -404; //stands for 404 - has not found any ore
        double distance = 30*30 + 15*15+1; //just a number, so my program thinks it's the biggest distance ever
        for(int i = 0; i < G.Count(); i++)
        {
            if (G[i].status != "?" && G[i].status != "0")
            {
                double newDistance = Math.Pow(myRobot.x - G[i].x,2) + Math.Pow(myRobot.y - G[i].y,2);
                if( newDistance < distance)
                {
                    distance = newDistance;
                    index = i;
                }
            }
        }
        return index;
    }