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:
2167 # 8760 # 4771 # 8633 @ 7929 @ 9784 @ 6892

Ex Output:
4608


Ex Input:
5406 @ 9263 @ 7443 @ 6591 # 7496 @ 2721 # 7867

Ex Output:
16061


Ex Input:
9895 @ 1998 @ 1534 @ 8854 # 70 # 5004 @ 3367 @ 8062

Ex Output:

28636