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: 8771 @ 2575 # 7914 # 3691
Example Output: -259

Example Input: 7165 @ 3630 @ 9021 # 4140 @ 319
Example Output: 15995

Example Input: 2650 # 4648 @ 6512 # 9130 # 4533 # 810 # 7190
Example Output:
-17149