using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace daysofweek
{
    class Program
    {
        static void Main(string[] args)
        {
            string[] day = { "Monday",
                "Tuesday",
                "Wednesday",
                "Thursday",
                "Friday",
                "Saturday",
                "Sunday" };

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

            if (n >= 1 && n <= 7)
                Console.WriteLine(day[n-1]);
            else
                Console.WriteLine("Invalid Day!");
        }
    }
}