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

Ex Input:
7671 # 7716 @ 5899 @ 2520 # 497 # 24 # 16 # 840 # 9556

Ex Output:
-2559

Ex Input:
2354 @ 5192 @ 5717 # 1833 @ 9672 # 3565

Ex Output:
17537

Ex Input:
7193 @ 9724 # 8644 @ 3615 # 1460 # 4129 # 5164

Ex Output:
1135