import java.util.Scanner;

public class program {
		
	public static void main(String[] args) {
		Scanner s = new Scanner(System.in);
		
		while (s.hasNextLine()) {
			String line = s.nextLine().trim();
			
			String[] words = line.split(" ");			
			String type, vars;
			int size = 0, dim = 0;
			
			if (words[0].equals("unsigned")) {
				type = words[1];
				vars = words[2];
			}
			else {
				type = words[0];
				vars = words[1];
			}
			
			if (type.equals("char"))
				size = 1;
			else if (type.equals("short"))
				size = 2;
			else if (type.equals("int"))
				size = 4;
			
			String[] names = vars.split(",");
			
			for (int i = 0; i < names.length; i++)
				if (!names[i].contains("["))
					dim += size;
				else {
					String[] strAux = names[i].split("\\[|\\]");
					int k = 1;
					for (int j = 1; j < strAux.length; j++)
						if (!strAux[j].equals(""))
							k *= Integer.parseInt(strAux[j]);
					dim += k * size;
				}
			
			System.out.println(dim);
		}
		
		s.close();		
	}

}