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:
1559 @ 760 # 5027 # 8544 @ 4623 # 9238

Ex Output:
-15867


Ex Input:
5662 @ 7781 # 5682 @ 864 @ 6796 @ 2353 @ 1100 # 7566

Ex Output:
11308


Ex Input:
775 # 7609 @ 2326 @ 8760 @ 4505

Ex Output:

8757