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

Q: 4956 # 4259 # 3459

A: -2762
****
Q: 2020 @ 862 # 5780

A: -2898
****
Q: 5274 @ 8123 @ 5544 @ 7060 # 1023

A:
24978
****