using System;

public class Program

{

    public static void Main()

    {

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

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

    if (day >= 1 && day <= 7)

    Console.WriteLine(days[day - 1]); else

    Console.WriteLine("Invalid day!");

    }

}