report_system

need_sum = int(input())
check_need_sum = need_sum
check_cash = True
cash_sum = []
card_sum = []

while check_need_sum:
    current_sum = input()
    if current_sum == 'End':
        break
    current_sum = int(current_sum)
    # Проверка за Възможна транзакция
    if check_cash and current_sum <= 100:
        print('Product sold!')
        cash_sum.append(current_sum)
        check_need_sum -= current_sum
        check_cash = False
        if check_need_sum < 0:
            break
    elif not check_cash and current_sum >= 10:
        print('Product sold!')
        card_sum.append(current_sum)
        check_need_sum -= current_sum
        check_cash = True
        if check_need_sum < 0:
            break
    else:
        print('Error in transaction!')
        if check_cash:
            check_cash = False
        elif not check_cash:
            check_cash = True
if not len(card_sum):
    aver_card = 0
elif not len(cash_sum):
    aver_cash = 0
else:
    aver_cash = sum(cash_sum) / len(cash_sum)
    aver_card = sum(card_sum) / len(card_sum)

if current_sum == 'End':
    print('Failed to collect required money for charity.')
else:
    print(f'Average CS: {aver_cash:.2f}')
    print(f'Average CC: {aver_card:.2f}')