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]: 4039 # 2314 # 8257 # 5828 @ 2387 @ 4250 @ 5479 # 991
[A]: -1235


[Q]: 643 @ 9262 # 6489 @ 1803 @ 6271
[A]: 11490


[Q]: 1005 # 6848 @ 1921 @ 1729 # 9985
[A]:
-12178