using System;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        bool isSuccess = false;

        int number = 0;

​

        while (!isSuccess)

        {

            isSuccess = int.TryParse(Console.ReadLine(), out number);

        }

​

        Console.WriteLine(string.Join(", ", GetNumber(number)));

    }

    private static List<int> GetNumber(int n)

    {

        if (n > 1)

        {

            List<int> tempList = GetNumber(n - 1);

            tempList.Add(n);

            return tempList;

        }

        else return new List<int>() {n};

    }

}