using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Enter a number");

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

        switch(weeknumber)

        {

            case 1:

                Console.WriteLine("sunday");

                break;

                case 2:

                Console.WriteLine("monday");

                break;

                case 3:

                Console.WriteLine("tuesday");

                break;

                case 4:

                Console.WriteLine("wednesday");

                break;

                case 5:

                Console.WriteLine("thursday");

                break;

                case 6:

                Console.WriteLine("friday");

                break;

                case 7:

                Console.WriteLine("saturday");

                break;

            default:

                Console.WriteLine("number is not exist");

                break;

        }

    }

}