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:
8842 @ 3530 @ 7537

Ex Output:
19909


Ex Input:
2416 @ 1212 @ 8014 @ 619

Ex Output:

12261


