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:
9336 # 483 # 2765

Ex Output:
6088


Ex Input:
8678 @ 7424 # 7399 @ 4601 @ 9327 @ 7787 @ 2286

Ex Output:
32704


Ex Input:
2857 @ 971 # 6594 @ 2644

Ex Output:

-122