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:
9942 @ 4126 @ 294 @ 6323 @ 9325 # 2366 # 3185 @ 8413 @ 6924

Ex Output:
39796


Ex Input:
1721 # 7193 # 7392 # 8999 # 7847 @ 5571 @ 4439 @ 7158 # 6030

Ex Output:
-18572


Ex Input:
7932 @ 8619 @ 7212 @ 8529

Ex Output:

32292