namespace IzpitCsharp2
{
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    class IzpitCsharp2
    {
        static void Main()
        {
            //grrrr miao miao
            string input = Console.ReadLine();

            List<string> catInput = input.Split(' ').ToList();
            var catCode = new List<string> { "a", "b", "c", "d", "e", "f", "g", "h", "i",
                "j", "k", "l", "m", "n", "o", "p", "q", "r", "s" };

            List<int> catNumber = new List<int>();
            string currentWord = string.Empty;
            int currentSum = 0;
            int sum = 0;

            for (int i = 0; i < catInput.Count; i++)
            {
                currentWord = catInput[i];
                currentSum = 0;

                for (int j = 0; j < currentWord.Length; j++)
                {
                    if (catCode.Contains(currentWord[j].ToString()))
                    {
                        catNumber.Add(catCode.IndexOf(currentWord[j].ToString()));
                    }
                }

                for (int n = 0; n < catNumber.Count; n++)
                {
                    int digits = int.Parse((catNumber[n].ToString()));
                    currentSum += digits * powerOfNine(catNumber.Count - n - 1);
                    sum += currentSum;
                }
            }


            Console.WriteLine(sum);
        }
        static int powerOfNine(int power)
        {
            int result = 1;

            for (int i = 0; i < power; i++)
            {
                result *= 19;
            }
            return result;
        }
    }
}