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]: 4324 # 426 # 9171 # 980 @ 9454 @ 9720 # 7367 # 9266 # 1237
[A]: -4949


[Q]: 4100 @ 4500 @ 5166 @ 7442 @ 3258
[A]: 24466


[Q]: 6574 @ 470 # 8486 @ 4421 @ 2614 @ 1257
[A]:
6850