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:
7016 @ 5245 # 3568 # 3445 # 5282 # 7568

Ex Output:
-7602


Ex Input:
1864 @ 5416 @ 9408 @ 9513

Ex Output:
26201


Ex Input:
485 @ 3169 # 6408 # 5976

Ex Output:

-8730