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:
8441 @ 2924 # 9024 @ 6661 @ 7034 # 4821 # 4921

Ex Output:
6294


Ex Input:
4226 # 927 @ 8517

Ex Output:

11816


