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

public class yukicoder
{
    public static string Convert(long n, long x)
    {
        string result = "";
        Stack<string> stack = new Stack<string>();

        while (true)
        {
            if (n < x)
            {
                stack.Push(n.ToString());
                break;
            }
            stack.Push((n % 7).ToString());
            n = n / x;
        }

        int temp = stack.Count;

        for (int i = 0; i < temp; i++)
        {
            result = result + stack.Pop();
        }

        return result;
    }

    public static void Main()
    {
        long n = long.Parse(Console.ReadLine());
        Console.WriteLine(Convert(n, 7));
    }
}