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:
4565 @ 7065 # 5397

Ex Output:
6233


Ex Input:
345 @ 1076 @ 7948 # 854

Ex Output:
8515


Ex Input:
2277 # 6790 # 8767 # 3882 # 8416 # 7478

Ex Output:

-33056