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:
5860 @ 3039 # 7874 # 3584 # 144

Ex Output:
-2703


Ex Input:
1380 @ 6582 # 4036

Ex Output:
3926


Ex Input:
232 @ 8414 # 4647

Ex Output:

3999