Account Balance

transactions = int(input())

bank_sum = 0

counter_transaction = 0

while counter_transaction < transactions:
    current_sum = float(input())

    if current_sum < 0:
        print('Invalid operation!')
        break

    print(f'Increase: {current_sum:.2f}')
    bank_sum += current_sum
    counter_transaction += 1


print(f'Total: {bank_sum:.2f}')