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: 2863 @ 9899 # 2358
Example Output: 10404

Example Input: 2113 # 9012 @ 5533 @ 5034 # 9159 # 2169 # 9889
Example Output: -17549

Example Input: 3440 # 4204 # 1554 @ 2189 # 317
Example Output:
-446