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

427 # 7974 # 7564 @ 2404 # 4955 # 1239 # 1518 @ 906
-19513

4264 # 4438 @ 3871 @ 7585 # 540 # 3455 # 6016
1271

3278 # 679 @ 3814 @ 4483

10896