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

Example Input: 2560 @ 144 @ 6785 @ 572 # 5190 @ 1929
Example Output: 6800

Example Input: 1277 # 3822 @ 5064 @ 3615 # 7107 # 5691 @ 1554 # 6525 @ 714
Example Output: -10921

Example Input: 3955 # 2277 @ 7973 @ 6447 # 236 @ 2655
Example Output:
18517