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:
9835 @ 3285 # 8713 # 3066

Ex Output:
1341


Ex Input:
7729 # 7280 @ 5072 @ 3806 # 6060

Ex Output:
3267


Ex Input:
8511 @ 5113 # 6002 # 7115 # 6146 # 5660

Ex Output:

-11299