import java.io.*;
public class Main {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        String[] strings = br.readLine().split("");
        int count = 0;
        for (String string : strings) {
            switch (string) {
                case "A":
                case "B":
                case "C":
                    count += 3;
                    break;
                case "D":
                case "E":
                case "F":
                    count += 4;
                    break;
                case "G":
                case "H":
                case "I":
                    count += 5;
                    break;
                case "J":
                case "K":
                case "L":
                    count += 6;
                    break;
                case "M":
                case "N":
                case "O":
                    count += 7;
                    break;
                case "P":
                case "Q":
                case "R":
                case "S":
                    count += 8;
                    break;
                case "T":
                case "U":
                case "V":
                    count += 9;
                    break;
                case "W":
                case "X":
                case "Y":
                case "Z":
                    count += 10;
                    break;
            }
        }
        bw.write(String.valueOf(count));
        bw.flush();
    }
}