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:
2057 # 2330 # 9059 # 2713 # 7404 @ 4349

Ex Output:
-15100


Ex Input:
4284 # 8233 @ 2781 # 2769 # 5560 @ 635 # 1706 @ 1965 @ 6794

Ex Output:
-1809


Ex Input:
5226 @ 1405 @ 8404

Ex Output:

15035