백준 5622

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;


public class Main5622 {

	public static void main(String[] args) throws IOException{
		BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
		String num = bf.readLine();
		int result=0;
		
		for(int i=0; i<num.length();i++){
			switch (num.charAt(i)) {
			case 'A':case'B':case'C':
				result += 3;
				break;
			case 'D':case'E':case'F':
				result += 4;
				break;
			case 'G':case'H':case'I':
				result += 5;
				break;
			case 'J':case'K':case'L':
				result += 6;
				break;
			case 'M':case'N':case'O':
				result += 7;
				break;
			case 'P':case'Q':case'R':case'S':
				result += 8;
				break;
			case 'T':case'U':case'V':
				result += 9;
				break;
			case 'W':case'X':case'Y':case'Z':
				result += 10;
				break;
			}
		}
		System.out.println(result);

	}

}