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: 2214 @ 2042 # 8931
Example Output: -4675

Example Input: 6915 @ 3564 # 9197 # 9440 # 1112 @ 382 @ 9681 # 6512 # 9658
Example Output: -15377

Example Input: 8790 # 6751 @ 1866 # 9620
Example Output:
-5715