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: 8324 # 6868 # 6537
Example Output: -5081

Example Input: 6729 # 1204 # 5514 # 8079
Example Output: -8068

Example Input: 3729 @ 1189 # 6692 # 8273 @ 6638 # 9383 @ 3238
Example Output:
-9554