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:
9049 # 6438 @ 8686 # 910 # 3586

Ex Output:
6801


Ex Input:
6471 @ 4836 @ 3552 # 2240 @ 9288 @ 8837

Ex Output:

30744