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: 872 @ 547 # 4476 @ 6631 # 8433 # 452 @ 5115
Example Output: -196

Example Input: 4238 # 9059 # 3579 @ 2750 # 6861 # 5756 @ 9729
Example Output: -8538

Example Input: 2781 @ 648 # 5143
Example Output:
-1714

