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: 123 # 6452 # 5554 # 9261 @ 6646
Example Output: -14498

Example Input: 9720 @ 6485 @ 1745 @ 728
Example Output: 18678

Example Input: 1852 # 1205 # 3650 @ 1201 # 279 # 2115
Example Output:
-4196