Speed Info

using System;

namespace SpeedInfo
{
    class Program
    {
        static void Main(string[] args)
        {
            //Вход: double speed
            //Изход:
            //до 10(включително) => “slow”
            //над 10 и до 50 => “average”
            //над 50 и до 150 => “fast”
            //над 150 и до 1000 => “ultra fast”
            //по-висока => “extremely fast”
            double num = double.Parse(Console.ReadLine());

            string speed = "extremely fast";

            if (num <= 10)
            {
                speed = "slow";
            }
            else if (num > 10 && num <= 50)
            {
                speed = "average";
            }
            else if (num > 50 && num <= 150)
            {
                speed = "fast";
            }
            else if (num > 150 && num <= 1000)
            {
                speed = "ultra fast";
            }

            Console.WriteLine(speed);
        }
    }
}