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:
8196 @ 7820 # 8484 # 7462 @ 8007 # 414

Ex Output:
7663


Ex Input:
3367 # 4567 @ 8786 @ 9643 @ 105 # 6364 @ 9695 # 2387 @ 8798

Ex Output:
27076


Ex Input:
8031 # 9790 @ 6692 @ 3314 @ 9024 # 2865 @ 8261

Ex Output:

22667