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

int sum, val, cnt, cntnr;
long long nr[100];
char s[105];

int main()
{
    cin.getline(s, 105, '\n');
    do
    {
        sum = cnt = 0;
        if ( s[0] == 'u' )
        {
            while ( s[cnt] != ' ' )
                ++cnt;
            ++cnt;
        }
        if ( s[cnt] == 'c' ) val = 1;
        else
            if ( s[cnt] == 's' ) val = 2;
            else val = 4;
        while ( s[cnt] != ' ' )
            ++cnt;
        ++cnt;
        while ( s[cnt] != '\0' )
        {
            while ( ( s[cnt] >= 'a' && s[cnt] <= 'z' ) || ( s[cnt] >= '0' && s[cnt] <= '9' ) )
                ++cnt;
            if ( s[cnt] == ',' )
            {
                ++sum;
                ++cnt;
            }
            else
            if ( s[cnt] == '\0' )
                ++sum;
            else
            {

                cntnr = 0;
                nr[0] = 1;
                while ( s[cnt] == '[' )
                {
                    nr[++cntnr] = 0;
                    ++cnt;
                    while ( s[cnt] >= '0' && s[cnt] <= '9' )
                    {
                        nr[cntnr] = nr[cntnr] * 10 + ( s[cnt] - '0' );
                        ++cnt;
                    }
                    ++cnt;
                }
                for ( int i = 1; i <= cntnr; ++i )
                    nr[0] *= nr[i];
                sum += nr[0];
                ++cnt;
            }
        }
        cout << 1LL * sum * val << "\n";
    cin.getline(s, 105, '\n');
    } while ( s[0] != '\0' );
    return 0;
}