using System;
using System.IO;
using System.Linq;
using System.Collections.Generic;

public class Program
{

	public void Proc()
	{
        long inpt = long.Parse(Reader.ReadLine());
        System.Text.StringBuilder ans = new System.Text.StringBuilder();
        long div = 7;
        while(inpt/div >= 7) {
            div *= 7;
        }
        while(div >= 7) {
            ans.Append(inpt/div);
            inpt = inpt % div;
            div = div / 7;
        }
        ans.Append(inpt);
        if (ans.Length > 1 && ans.ToString()[0] == '0') {
            ans.Remove(0,1);
        }
        Console.WriteLine(ans.ToString());
    }

	public class Reader
	{
		private static StringReader sr;
		public static bool IsDebug = false;
		public static string ReadLine()
		{
			if (IsDebug)
			{
				if (sr == null)
				{
					sr = new StringReader(InputText.Trim());
				}
				return sr.ReadLine();
			}
			else
			{
				return Console.ReadLine();
			}
		}
		private static string InputText = @"



1000000000





";
	}

	public static void Main(string[] args)
	{
#if DEBUG
		Reader.IsDebug = true;
#endif
		Program prg = new Program();
		prg.Proc();
	}
}