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: 8717 @ 6135 # 2706
Example Output: 12146

Example Input: 5604 # 514 # 150 @ 4349 @ 958 # 6247 # 8710
Example Output: -4710

Example Input: 3317 # 2600 @ 3546 # 5856
Example Output:
-1593