using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace YukiCoder
{
	public class QuestionNo499
	{
		public static void Main()
		{
			decimal InputNum = Convert.ToDecimal(Console.ReadLine());

			Stack<decimal> SevenNum = new Stack<decimal>();

			while(InputNum >= 7)
			{
				SevenNum.Push(InputNum % 7);
				InputNum = (InputNum - (InputNum % 7)) / 7;
			}
			SevenNum.Push(InputNum);

			
			for (int i = SevenNum.Count; i > 0; i--)
			{
				Console.Write(SevenNum.Pop());
			}
		}

	}
}