Gold Mine

#include <iostream>

using namespace std;

int main() {
    int locations;
    cin >> locations;

    for (int i = 0; i < locations; i++) {
        double averageGold, gold, goldSum = 0;
        cin >> averageGold;

        int dayDigging;
        cin >> dayDigging;

        for (int j = 0; j < dayDigging; j++) {
            cin >> gold;
            goldSum += gold;
        }

        cout.setf(ios::fixed);
        cout.precision(2);

        if (goldSum / dayDigging >= averageGold) {
            cout << "Good job! Average gold per day: " << goldSum / dayDigging << ".\n";
        }
        else {
            cout << "You need " << averageGold - (goldSum / dayDigging) << " gold.\n";
        }
    }

    return 0;
}