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:
4400 @ 9261 @ 3016

Ex Output:
16677


Ex Input:
8238 @ 9817 # 2474 @ 3673 @ 9625 # 849 @ 1441

Ex Output:
29471


Ex Input:
1581 @ 3910 @ 8210 @ 5375

Ex Output:

19076