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:
5860 @ 3039 # 7874 # 3584 # 144

Ex Output:
-2703


Ex Input:
605 @ 9301 @ 640 # 9148 # 8015

Ex Output:
-6617


Ex Input:
134 @ 2902 # 369 # 2158 # 8943 # 9330 # 9242

Ex Output:

-27006