#include <cstdio>
#include <string>
#include <iostream>
using namespace std;
int main() {
    std::ios_base::sync_with_stdio(false);
    freopen("in.txt", "r", stdin);
    freopen("out.txt", "w", stdout);
    int t;
    cin >> t;
    while (t--) {
        int ara[300] = {0};
        int n, in2, i, ans =0;
        char in1;
        cin >> n;
        while (n--) {
            cin >> in1 >> in2;
            ara[in1] = in2;
        }
        cin >> n;
        //getchar();
        string str;
        while (n--) {
            i=0;

            getline(cin, str);
            while (str[i]!='\0') {
                ans += ara[str[i]];
                i++;
            }
        }
        cout << ans/100 << ".";
        ans = ans%100;
        if (ans/10==0) cout << "0" << ans << "$\n";
        else cout << ans << "$\n";
    }
    return 0;
}