using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Enter the speed");

        int A=int.Parse(Console.ReadLine());

        if (A<10)

        {

        Console.WriteLine("Slow");

        }

        else if (A<=10 && A<=50)

        {

        Console.WriteLine("Average");

        }

        else if (A>50 && A<=150)

        {

        Console.WriteLine("Fast!");

        }

        else if (A>150 && A<=1000)

        {

        Console.WriteLine("Ultra fast!!");

        }

        else

        {

        Console.WriteLine("Extremely fast!!!");

        }

    }

}

​