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:
3007 @ 8777 # 8750

Ex Output:
3034


Ex Input:
2996 @ 6178 @ 7214 # 172 # 3711

Ex Output:
12505


Ex Input:
8529 @ 2284 # 7226 @ 8133 @ 6564

Ex Output:

18284