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:
5274 @ 8123 @ 5544 @ 7060 # 1023

Ex Output:
24978


Ex Input:
3147 @ 2272 # 9050

Ex Output:
-3631


Ex Input:
9602 @ 9339 # 9232 @ 6281 # 3927 @ 7872 @ 5940 # 7006

Ex Output:

18869