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:
4238 # 9059 # 3579 @ 2750 # 6861 # 5756 @ 9729

Ex Output:
-8538


Ex Input:
1380 @ 6582 # 4036

Ex Output:
3926


Ex Input:
1873 @ 5884 # 5549

Ex Output:

2208