6. Информация за скоростта

using System;

namespace _06._Speed_Info
{
    class Program
    {
        static void Main(string[] args)
        {
            double speed = double.Parse(Console.ReadLine());
            //<= 10 -> slow
            //<= 50 -> average
            //<= 150 -> fast
            //<= 1000 -> ultra fast
            //> 1000 -> extremely fast

            if (speed <= 10)
            {
                Console.WriteLine("slow");
            }
            else if (speed <= 50)
            {
                Console.WriteLine("average");
            }
            else if (speed <= 150)
            {
                Console.WriteLine("fast");
            }
            else if (speed <= 1000)
            {
                Console.WriteLine("ultra fast");
            }
            else if (speed > 1000)
            {
                Console.WriteLine("extremely fast");
            }

        }
    }
}