using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Input week number");

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

        Console.WriteLine();

        switch (week)

        {

            case 1 :

                Console.WriteLine("The day is Monday.");

                break;

            case 2 :

                Console.WriteLine("The day is Tuesday.");

                break;

            case 3 :

                Console.WriteLine("The day is Wednesday.");

                break;

            case 4 :

                Console.WriteLine("The day is Thursday.");

            break ;

            case 5 :

                Console.WriteLine("The day is Friday.");

                break ;

            case 6 :

                Console.WriteLine("The day is Saturday.");

                break ;

            case 7 :

                Console.WriteLine("The day is Sunday.");

                break ;

            default :

                Console.WriteLine("Error!! Please input week number between 1-7 only");

                break ;

        }

    }

}