# Write a program that computes the net amount of a bank account based a transaction log from console input. The transaction log format is shown as following:D 100W 200D means deposit while W means withdrawal. netAmount = 0while True:    s = raw_input()    if not s:        break    values = s.split(" ")    operation = values[0]    amount = int(values[1])    if operation=="D":        netAmount+=amount    elif operation=="W":        netAmount-=amount    else:        passprint netAmount