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:
6120 # 9271 # 7167 @ 6916 # 2510 @ 7854 # 7909 # 1960 # 3775

Ex Output:
-11702


Ex Input:
9525 # 6588 @ 2536 # 7663 @ 3924 # 1602 @ 3464 # 1422

Ex Output:

2174