Gold mine

# Gold Mine
locations = int(input())

for mines in range(1, locations + 1):
    sum_extraction = 0
    average_extraction = 0
    average_gold_per_day = float(input())
    needed_days = int(input())
    for gold in range(1, needed_days + 1):
        get_gold = float(input())
        sum_extraction += get_gold
    average_extraction = sum_extraction / needed_days
    if average_extraction >= average_gold_per_day:
        print(f"Good job! Average gold per day: {average_extraction:.2f}.")
    else:
        difference = average_gold_per_day - average_extraction
        print(f'You need {difference:.2f} gold.')