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:
1516 # 4681 # 225 # 3393 @ 1212 @ 367

Ex Output:
-5204


Ex Input:
4864 # 9133 # 8662 # 9305 # 7575

Ex Output:

-29811