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

//0	       f
//1	     bIN
//2	   oBJEC
//3	 mNTRAVL
//4	  lPVKNQ
//5	    pNWE
//6	      hT

class Program
{
    static void Main()
    {
        string input = Console.ReadLine();
        StringBuilder text = new StringBuilder(input);
        BigInteger number = 0;
        BigInteger counter = 1;
        byte digit = 0;
        byte symbolsToDelate = 0;
        while (text.Length != 0)
        {
            digit = DigitAsNum((text[text.Length - 1]).ToString());
            number += digit * counter;
            symbolsToDelate = SymbolsToDelate(text[text.Length - 1].ToString());
            text.Remove(text.Length - symbolsToDelate, symbolsToDelate);
            counter *= 7;
        }
        Console.WriteLine(number);
    }

    private static byte SymbolsToDelate(string lastSymbol)
    {
        byte digit = 0;
        switch (lastSymbol)
        {
            case "f":
                digit = 1;

                break;
            case "N":
                digit = 3;
                break;
            case "C":
                digit = 5;
                break;
            case "L":
                digit = 7;
                break;
            case "Q":
                digit = 6;
                break;
            case "E":
                digit = 4;
                break;
            case "T":
                digit = 2;
                break;
        }
        return digit;
    }
    private static byte DigitAsNum(string digitStr)
    {

        byte digit = 0;
        switch (digitStr)
        {
            case "f":
                digit = 0;

                break;
            case "N":
                digit = 1;
                break;
            case "C":
                digit = 2;
                break;
            case "L":
                digit = 3;
                break;
            case "Q":
                digit = 4;
                break;
            case "E":
                digit = 5;
                break;
            case "T":
                digit = 6;
                break;
        }
        return digit;
    }
}