#include <iostream>
#include <cstdio>
#include <cstring>

using namespace std;

char s[105],type[100];
char a[100][100], aux[100];
int memorie[100], m, ak;
int k;
long long sum;

bool cifre(char s[100]) {
    int len = strlen(s);
    for(int i = 0; i < len; i++)
        if(s[i] >= '0' && s[i] <= '9')
            return true;
    return false;
}

long long prelucrare(char s[100]) {
    m = 0;
    memset(aux, 0, sizeof(aux));
    ak = 0;
    if(cifre(s) == 0)
        return 1;
    else {
        int len = strlen(s);
        for(int i = 0; i < len; i++) {
            if(s[i] == ']') {
                sscanf(aux, "%d", &memorie[m++]);
                memset(aux, 0, sizeof(aux));
                ak = 0;
            }
            else if(isdigit(s[i]) && s[i-1] == '['){
                while(isdigit(s[i]))
                    aux[ak++] = s[i++];
                aux[ak] = 0;
                i--;
            }
        }
        long long temp = 1;
        for(int i = 0; i < m; i++)
            temp *= memorie[i];
        return temp;
    }
}

long long number(char s[]) {
    long long suma = 0;
    char *t = strtok(s, ",");
    while(t) {
        strcpy(a[k++], t);
        t = strtok(NULL, ",");
    }
    for(int i = 0; i < k; i++)
        suma += prelucrare(a[i]);

    return suma;
}

bool eok(char s[]) {
    if(!isalpha(s[0]))
        return 0;
    return 1;
}
int main()
{
    //freopen("date.in", "r", stdin);
    while(cin>>type) {
        if(eok(type) == 0)
            break;
        memset(s, 0, sizeof(s));
        memset(a, 0, sizeof(a));
        k = 0;
        sum = 0;

        if(strcmp(type, "unsigned") == 0) {
            memset(s, 0, sizeof(s));
            scanf("%s ", type);
        }
        fgets(s, 100, stdin);
        if(strcmp(type, "int") == 0)
            sum += 4*number(s);
        else if(strcmp(type, "char") == 0)
            sum += number(s);
        else if(strcmp(type, "short") == 0)
            sum += 2*number(s);

        printf("%lld\n", sum);

        memset(type, 0, sizeof(type));
    }
    return 0;
}