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:
5265 @ 8995 # 365 # 6720 @ 438 # 9846 # 1190 @ 1943 # 9835

Ex Output:
-11315


Ex Input:
523 # 5860 # 778

Ex Output:
-6115


Ex Input:
1336 # 1080 # 4873 @ 2724 # 8322 @ 844

Ex Output:

-9371