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:
5968 # 833 # 9263 @ 5675 @ 3262 # 2158

Ex Output:
2651


Ex Input:
8929 # 6145 @ 8551 # 1836 @ 9159

Ex Output:
18658


Ex Input:
2193 @ 6068 # 2779

Ex Output:

5482