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:
9889 @ 8457 # 4692

Ex Output:
13654


Ex Input:
1131 @ 2823 # 1847 @ 6137 @ 7300 @ 27

Ex Output:
15571


Ex Input:
7319 @ 2024 # 168

Ex Output:

9175