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]: 5249 @ 1204 # 3908 # 5196 @ 1711 @ 8089 # 8419 # 2865 @ 1478
[A]: -2657


[Q]: 4130 @ 6495 # 3973
[A]: 6652


[Q]: 63 # 1002 @ 463 # 2198 @ 9999 # 7044
[A]:
281