#include <bits/stdc++.h>
using namespace std;
int main() {
    std::ios_base::sync_with_stdio(false);

    int t;
    cin >> t;
    while (t--) {
        int ara[300] = {0};
        int n, in2, i;
        double ans = 0;
        char in1;
        cin >> n;
        while (n--) {
            cin >> in1 >> in2;
            ara[in1] = in2;
        }
        cin >> n;

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