In this task you will be given an arithmetic operation and you have to find its answer. The operators '+' and '-' have been replaced with new symbols. Specifically, '+' has been replaced with the symbol '@' and '-' with the symbol '#'. You need to perform the operations in the given equation return the answer

Ex Input:
610 # 7967 # 8700 # 5966 @ 4310 @ 9963 # 8525

Ex Output:
-16275


Ex Input:
1767 @ 7166 @ 1543 @ 1185 @ 9966 # 6628

Ex Output:
14999


Ex Input:
5372 # 7144 # 4993

Ex Output:

-6765