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:
931 # 9775 @ 8414

Ex Output:
-430


Ex Input:
5569 # 5161 @ 9240 @ 391 @ 2756 # 7345 @ 4533

Ex Output:
9983


Ex Input:
5360 @ 2298 @ 6973 @ 8214 @ 9515 @ 7411 # 1077 # 1534

Ex Output:

37160