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: 1566 @ 1639 # 814 # 5278 @ 1717 # 4304 # 6735 @ 1407
Example Output: -10802

Example Input: 4368 # 7312 @ 7468 # 4833 # 1476 # 42
Example Output: -1827

Example Input: 7204 @ 9790 # 5249 @ 4368 # 7525
Example Output:
8588