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: 8161 @ 9287 # 6233
Example Output: 11215

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

Example Input: 5501 # 2134 @ 40 # 6811 # 5140 # 4297 # 507 # 8413
Example Output:
-21761