using System;

public class Program

{

    public static void Main()

    {

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

         switch (day)

         {

           case 1: Console.WriteLine("Monday"); break;

           case 2: Console.WriteLine("Tuesday"); break;

           case 3: Console.WriteLine("Wensday"); break;

           case 4: Console.WriteLine("Thursday"); break;

           case 5: Console.WriteLine("Friday"); break;

           case 6: Console.WriteLine("Saturday"); break;

           case 7: Console.WriteLine("Sunday"); break; 

            default :  Console.WriteLine("Error"); break;

         }

    }

}