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:
5347 # 326 # 6112 # 4655 @ 2124

Ex Output:
-3622


Ex Input:
2065 @ 3769 @ 9915 # 6270 @ 3929 @ 5328 @ 6079 @ 5250 @ 843

Ex Output:
30908


Ex Input:
9144 # 4219 @ 6461 @ 8799

Ex Output:

20185