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: 4970 @ 8711 @ 6188
Example Output: 19869

Example Input: 3586 # 8254 # 4130 # 5426
Example Output: -14224

Example Input: 8521 # 7325 # 8529
Example Output:
-7333

