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:
5571 @ 5729 # 6405 # 526 # 1330

Ex Output:
3039


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

Ex Output:
11308


Ex Input:
1480 # 9825 # 9193 # 3594 # 4721 # 4566

Ex Output:

-30419