using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("enter the Marks");

        int a =Convert.ToInt32(Console.ReadLine());

        if(a>=60)

        {

            Console.WriteLine("first division");

        }

        else if (a>=50 && a<60)

        {

            Console.WriteLine("2nd division");

        }

        else if(a>=40 && a<50)

        {

            Console.WriteLine("3rd division");

        }

        else

        {

            Console.WriteLine("fail");

        }

    }

}