import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class Main {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
char[] arr = br.readLine().toCharArray();
int time = 0;
for(char c : arr){
if(c <= 67) time += 3;
else if(c <= 70) time += 4;
else if(c <= 73) time += 5;
else if(c <= 76) time += 6;
else if(c <= 79) time += 7;
else if(c <= 83) time += 8;
else if(c <= 86) time += 9;
else time += 10;
}
System.out.println(time);
br.close();
}
}