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

3556 # 1722 @ 9362 # 7616 # 7893
-4313

6420 @ 6956 @ 9478 # 4046
18808

1831 @ 2576 # 4079 @ 1814

2142