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:
9024 # 5882 # 8531 # 9692 # 8354 @ 9065 # 1468

Ex Output:
-15838


Ex Input:
6960 # 4418 @ 5450 @ 8475

Ex Output:
16467


Ex Input:
4606 @ 2902 # 2841 # 2840 @ 9773

Ex Output:

11600