using System;

    class SevenLandNumbers

    {
        static void Main()
        {
            string input = Console.ReadLine();
            int inputNumber = int.Parse(input);
            byte powerCounter = 0;
            int decimalNumber = 0;

            while (inputNumber != 0)
            {
                byte lastNumber = (byte)(inputNumber % 10);
                decimalNumber += lastNumber * (int)Math.Pow(7, powerCounter);
                powerCounter++;
                inputNumber /= 10;
            }

            decimalNumber++;

            string result = "";

            while (decimalNumber != 0)
            {
                byte lastNumber = (byte)(decimalNumber % 7);


                    result += lastNumber;


                decimalNumber /= 7;
            }
            Console.WriteLine(result);


        }
    }