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: 6 @ 17
Example output: 23
Example explanation: Here, '@' represents the addition operation. So, the answer is 23 (6+17=23).
Q: 2859 # 2534 # 5971 # 5405 # 5877 @ 539 @ 4288 @ 7838 # 4956
A:
-9219