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: 837 @ 118 @ 1503 # 3288 @ 6669 # 1394
Example Output: 4445

Example Input: 4596 # 4475 # 6599
Example Output: -6478

Example Input: 2495 # 9840 # 4949 @ 9011
Example Output:
-3283

