package backjoon;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

// https://www.acmicpc.net/problem/5622

// 다이얼

public class _5622 {

public static void main(String[] args) throws IOException {

//sol memory 11432 runtime 76

BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

char[] dials = br.readLine().toCharArray();

int minSec = 0;

for(char c : dials){

switch (c){

case 'A': case 'B': case 'C':

minSec += 3;

break;

case 'D' : case 'E': case 'F' :

minSec += 4;

break;

case 'G' : case 'H': case 'I' :

minSec += 5;

break;

case 'J' : case 'K': case 'L' :

minSec += 6;

break;

case 'M' : case 'N': case 'O' :

minSec += 7;

break;

case 'P' : case 'Q': case 'R' : case 'S' :

minSec += 8;

break;

case 'T' : case 'U': case 'V' :

minSec += 9;

break;

case 'W' : case 'X': case 'Y' : case 'Z' :

minSec += 10;

break;

}

}

System.out.println(minSec);

}

}

/*

input

UNUCIC

output

36

*/