instruction:
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
question:
549 @ 2405 # 8368 @ 806 @ 5639
answer:
1031


question:
3309 @ 2855 @ 8458 # 3671 # 4410 # 6229 # 4661 # 2777
answer:
-7126


question:
4095 # 9640 # 5113 # 9355
answer:

-20013