namespace Problem_11___Little_John
{
    using System;
    using System.Text;
    using System.Text.RegularExpressions;
    using System.Numerics;

    internal class LittleJohn
    {
        private const string largeArrow = ">>>----->>";

        private const string mediumArrow = ">>----->";

        private const string smallArrow = ">----->";

        private static void Main(string[] args)
        {
            StringBuilder sb = new StringBuilder();

            for (int i = 0; i < 4; i++)
            {
                string line = Console.ReadLine();
                sb.Append(line);
                sb.Append(" ");
            }
            int countLarge = 0;
            int countMedium = 0;
            int countSmall = 0;

            string text = sb.ToString();
            string pattern = @"(>>>----->>)|(>>----->)|(>----->)";
            Regex rgx = new Regex(pattern);
            MatchCollection matches = rgx.Matches(text);
            foreach (Match match in matches)
            {
                if (match.Groups[1].Value == largeArrow)
                {
                    countLarge++;
                }
                else if (match.Groups[2].Value == mediumArrow)
                {
                    countMedium++;
                }
                else if (match.Groups[3].Value == smallArrow)
                {
                    countSmall++;
                }
            }
            int number = countSmall * 100 + countMedium * 10 + countLarge;
            string binaryNum = Convert.ToString(number, 2);
            char[] reversed = binaryNum.ToCharArray();
            Array.Reverse(reversed);
            string reversedNum = new string(reversed);
            string stringApend = binaryNum + reversedNum;

            string result = Convert.ToUInt64(stringApend, 2).ToString();
            Console.WriteLine(result);
        }
    }
}