using System;
using System.Collections.Generic;
using System.Linq;

namespace Demo
{
    internal class Program
    {
        static void Main(string[] args)
        {
            int n = int.Parse(Console.ReadLine());

            string[] day = {"Monday",
            "Tuesday",
            "Wednesday",
            "Thursday",
            "Friday",
            "Saturday",
            "Sunday"};

            if (n <= 0 || n > 7)
            {
                Console.WriteLine("Invalid Day!");
            }
            Console.WriteLine(day[n-1]);
        }
    }
}