#include <bits/stdc++.h>
using namespace std;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    // 难度比例表
    unordered_map<int, double> ratio = {
        {2, 0.4}, {3, 0.5}, {4, 0.6},
        {6, 0.7}, {7, 0.8}, {9, 0.9}, {10, 1.0}
    };

    int T;
    cin >> T;
    while (T--) {
        int m;
        cin >> m;
        double total = 0.0;
        for (int i = 0; i < m; i++) {
            char op;
            cin >> op;
            if (op == 'A') {
                int x;
                cin >> x;
                if (x >= 1 && x <= 10) total += x;
                else total += (x % 10) * 10;
            } 
            else if (op == 'B') {
                int n, c;
                cin >> n >> c;
                total += ratio[n] * 50 * c * 0.1;
            } 
            else if (op == 'C') {
                int n, c;
                cin >> n >> c;
                total += ratio[n] * 20 * c * 0.01;
            }
        }
        cout << fixed << setprecision(2) << total << "\n";
    }
    return 0;
}