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:
826 # 6501 # 223 @ 9761 # 8863

Ex Output:
-5000


Ex Input:
9775 # 6535 # 8617 # 2769 # 4357 @ 8004 @ 6181 # 7983

Ex Output:

-6301