#include <iostream>
#include <string>
using namespace std;

int main(){
	string tip;
	string s;
	int velikost;
	int stevec, stevec1;
	int d;

	while(1){
		long stevec = 0;
		long stevec1 = 0;
		cin>>tip;
		if(cin.eof()){
			break;
		}
		if(tip[0] == 'u'){//zaradi unsigned
			cin>>tip;
		}
		getline(cin, s);

		switch(tip[0]){
			case 'c': {velikost = 1; break;}
			case 's':{velikost = 2; break;}
			case 'i':	 {velikost = 4; break;}
		}
		stevec1 = 1;
		for(int i=0; i<(int)s.size(); i++){
			if(s[i] == ','){
				stevec+=stevec1;
				stevec1 = 1;
			}
			else if(s[i] == '['){
				d = 0;  i++;
				while(s[i] != ']'){
					d = 10*d+s[i]-48;
					i++;
				}
				stevec1*=d;
			}
		}
		stevec+=stevec1;
		cout<<(stevec*velikost)<<'\n';
	}


	return 0;
}