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:
445 # 5783 # 3236 # 9634 # 2299 # 2757 @ 3895 @ 5353 # 5757

Ex Output:
-19773


Ex Input:
8997 @ 8611 # 604 @ 1810 # 1906 @ 5956

Ex Output:
22864


Ex Input:
8168 @ 2788 # 7291 @ 9663

Ex Output:

13328