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:
2598 # 1930 @ 3599

Ex Output:
4267


Ex Input:
1516 # 4681 # 225 # 3393 @ 1212 @ 367

Ex Output:
-5204


Ex Input:
7334 @ 290 @ 4994 @ 7044 # 4558 # 946 @ 4613 # 8907 # 5582

Ex Output:

4282