11340 - Newspaper

using namespace std;
inline string format_dollar(int cents)
{
    stringstream ss;
    int dollars = cents / 100;
    cents = cents % 100;
    ss << dollars << "." << setw(2) << setfill('0') << cents << "$";
    return ss.str();
}
int main(void)
{
    int t;
    cin >> t;
    while (t--)
    {
        int k, m;
        map<char, int> value;
        string s;
        cin >> k;
        while (k--)
        {
            char c;
            cin >> c;
            cin >> value[c];
        }
        cin >> m;
        cin.ignore();
        int cents = 0;
        while (m--)
        {
            getline(cin, s);
            cents = accumulate(s.begin(), s.end(), cents, [&value](int acc, char c) {
                return acc + value[c];
            });
        }
        cout << format_dollar(cents) << endl;
    }
    return 0;
}