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

using namespace std;

char str[102];

int main()
{
    long int i, x, n, sum, b;
    fgets(str, 100, stdin);
    while (*str != 10)
    {
        i = 0;
        sum = 0;
        if (*str == 'u')
            i = 9;
        else i = 0;
        if (str[i] == 'c') b = 1, i += 5;
        else  if (str[i] == 's') b = 2, i += 6;
        else  /*if (str[i] == 'i')*/ b = 4, i += 4;

        x = 1;
        while (str[i] != 10)
        {
            if (str[i] == '[')
            {
                n = 0;
                while (str[++i] != ']')
                {
                    n = n * 10 + str[i] - '0';
                }
                x *= n;
            } else if (str[i] == ','){
                sum += x;
                x = 1;
            }
            ++i;
        }
        sum += x;
        x = 1;
        fprintf(stdout, "%ld\n", b * sum);
        fgets(str, 100, stdin);
    }
    return 0;
}