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:
3147 @ 2272 # 9050

Ex Output:
-3631


Ex Input:
1021 # 2896 # 8239 # 5207 # 1962 # 5346

Ex Output:
-22629


Ex Input:
7477 # 3932 @ 8473 # 7040 # 7705 @ 4780 @ 1503 @ 9469 # 4218

Ex Output:

8807