X: Transactions

transaction = input()

while transaction:
    if transaction == '0 W 0':
        break

    transaction = transaction.split(' ')

    if transaction[1] == 'W':
        money = int(transaction[0]) - int(transaction[2])
    else:
        money = int(transaction[0]) + int(transaction[2])

    if money < -200:
        print('Not allowed')
    else:
        print(money)

    transaction = input()