import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class prog {
	public static void main(final String[] args) {
		Scanner scan = new Scanner(System.in);
		while(scan.hasNext()){
			int res = 0;
			String[] line = scan.nextLine().split(" ");
			String type = line[0];
			int next = 1;
			if(type.equals("unsigned")){
				type = line[1];
				next = 2;
			}
			int typeSize = type.equals("char") ? 1 : (type.equals("short") ? 2 : 4);
			String[] vars = line[next].split(",");
			for (int i = 0; i < vars.length; i++) {
				if(!vars[i].contains("[")){
					res += typeSize;
				} else {
					Pattern p = Pattern.compile("\\[\\d*\\]");
					Matcher m = p.matcher(vars[i]);
					int localSize = typeSize;
					while(m.find()){
						String group = m.group();
						localSize *= Integer.parseInt(group.substring(1, group.length()-1));
					}
					res+=localSize;
				}
			}
			System.out.println(res);
		}
		scan.close();
	}
}