using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    public static void Main()

    {

        char[] diccionario = "abcdefghijklmnñopqrstuvwxyz".ToCharArray();

        string pass = Console.ReadLine().Trim().ToLower(); 

        int contador = 0;

        foreach(char i in pass.ToArray()){

                contador += (diccionario.ToList().IndexOf(i) + 1);

        }

        Console.WriteLine(string.Format("{0} intentos", contador));

    }

}