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:
1948 @ 7201 @ 611 # 9763 # 2998 # 5097 # 9302 # 3012 # 8272

Ex Output:
-28684


Ex Input:
1737 # 3662 # 9496 @ 694

Ex Output:
-10727


Ex Input:
2856 @ 6983 @ 7239 @ 2394 @ 8882 # 1835

Ex Output:

26519