Building budget

budget = float(input())
capital = float(input())
number_investors = int(input())

counter = 1

while counter <= number_investors:
    investor_sum = float(input())
    print(f"Investor {counter} gave us {investor_sum:.2f}.")
    capital = capital + investor_sum
    if capital >= budget:
        extra_money = capital - budget
        print(f"We will manage to build it. Start now! Extra money - {extra_money:.2f}.")
        exit(0)
    else:
        counter += 1

extra_money = budget - capital
print(f"Project can not start. We need {extra_money:.2f} more.")