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

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            int N = int.Parse(Console.ReadLine());
            int n_sinsu = 7;
            long answer = 0;
            long a = 1;
            while(N != 0) 
            {
                answer += (N % n_sinsu) * a;
                N = N / n_sinsu;
                a *= 10;
            }
            Console.WriteLine(answer);
        }
    }
}