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:
2182 @ 8380 # 337

Ex Output:
10225


Ex Input:
7152 @ 8957 # 8060 # 3668 # 8713 # 9420 # 3603

Ex Output:
-17355


Ex Input:
8096 @ 137 @ 4160 @ 2416 # 4241 @ 793 @ 5267 # 2619

Ex Output:

14009