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:
126 @ 8943 @ 2476 # 7766 @ 2271 # 7213 @ 6602 # 8086 @ 2129

Ex Output:
-518


Ex Input:
192 # 4739 @ 5302 @ 6325 @ 5528 @ 1101 # 157 # 6921 @ 5541

Ex Output:
12172


Ex Input:
7175 # 8103 @ 7509 # 5854 # 7265 # 1497

Ex Output:

-8035