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:
4844 # 7776 # 6204 # 1027 # 4447 # 7998 # 6045 @ 8611 @ 2765

Ex Output:
-17277


Ex Input:
2787 @ 3800 # 142 # 7750 # 8581 @ 5447 @ 1512 @ 6550

Ex Output:
3623


Ex Input:
56 @ 6370 @ 5891 # 594 @ 3463 # 7737 # 9632 @ 2401

Ex Output:

218