using System;

namespace RecursionTest
{
	/// <summary>
	/// Summary description for digitscs.
	/// </summary>
	public class digits
	{
		public static void Main()
		{
			Console.WriteLine("Input a positive integer:");
			int x = int.Parse(Console.ReadLine());

			WriteDigits(x);
		}
		static public void WriteDigits(int n)
		{
			if(n<10)
			{
				Console.WriteLine("{0}",n);
			}
			else
			{
				WriteDigits(n/10);
				Console.WriteLine("{0}",n%10);				
			}
		}			
	}
}