using System;

namespace ConsoleApp1
{
    class Program2
    {
        static void Main(string[] args)
        {
            string string1;
            string1 = Console.ReadLine();
            Console.WriteLine(string1);
            bool parse = Int32.TryParse(string1, out int num);
            //num = Convert.ToInt32(string1);
            if (parse)
            {
                switch (num)
                {
                    case 1:
                        Console.WriteLine("monday");
                        break;
                    case 2:
                        Console.WriteLine("tuesday");
                        break;
                    case 3:
                        Console.WriteLine("wednesday");
                        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;
                }
            }

        }
    }
}