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:
4331 # 7606 @ 9043 @ 9912 @ 1560 # 5858 @ 703

Ex Output:
12085


Ex Input:
995 @ 6856 @ 867 # 7415 # 9581

Ex Output:
-8278


Ex Input:
1075 # 4704 # 8582 @ 2960 @ 8010 @ 617 # 4972 @ 2013

Ex Output:

-3583