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:
4596 # 4475 # 6599

Ex Output:
-6478


Ex Input:
3337 @ 9906 @ 9733 # 853 @ 5075 # 2064 @ 9450 # 3886

Ex Output:
30698


Ex Input:
1696 @ 9285 # 8484 @ 1114 # 4257 @ 9829 # 2573 @ 7448 @ 7324

Ex Output:

21382