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: 1737 # 3662 # 9496 @ 694
Example Output: -10727

Example Input: 7021 # 2043 @ 7414 # 2632 @ 2939 @ 8718 @ 2731
Example Output: 24148

Example Input: 610 @ 4239 # 7688 # 1986 # 328 @ 9434 # 9876 # 423 # 2271
Example Output:
-8289