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:
6733 # 361 @ 8396 @ 7920 @ 7915 # 1370 @ 5576 # 1321 @ 343

Ex Output:
33831


Ex Input:
7021 # 2043 @ 7414 # 2632 @ 2939 @ 8718 @ 2731

Ex Output:
24148


Ex Input:
64 @ 11 @ 8854 # 4838 @ 7748 @ 5164 # 3777 @ 9227

Ex Output:

22453