codes

        // game loop
        while (true)
        {
            int maxVal = -1;
            int maxIndex = 0;
            for (int i = 0; i < 8; i++)
            {
                int mountainH = int.Parse(Console.ReadLine()); // represents the height of one mountain.
                if(mountainH > maxVal)
                {
                    maxVal = mountainH;
                    maxIndex = i;
                }
            }

            // Write an action using Console.WriteLine()
            // To debug: Console.Error.WriteLine("Debug messages...");

            Console.WriteLine(maxIndex); // The index of the mountain to fire on.
        }