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:
9318 @ 858 @ 9508 @ 5403 # 5141 @ 6503 @ 9412

Ex Output:
35861


Ex Input:
6055 # 1440 # 3272 # 5643 @ 150 @ 7658 # 8655 @ 8463 # 8156

Ex Output:
-4840


Ex Input:
1078 @ 2128 @ 513 @ 5898 # 8020

Ex Output:

1597