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:
4586 # 8527 @ 5828 @ 460 @ 1195

Ex Output:
3542


Ex Input:
8161 @ 9287 # 6233

Ex Output:
11215


Ex Input:
7640 @ 3347 @ 904

Ex Output:

11891