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:
5662 @ 7781 # 5682 @ 864 @ 6796 @ 2353 @ 1100 # 7566

Ex Output:
11308


Ex Input:
6543 @ 9353 @ 2169 # 4681 @ 6446

Ex Output:
19830


Ex Input:
3365 # 8541 @ 22 @ 8518

Ex Output:

3364