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:
4945 # 9916 # 656 @ 6515 # 5000 @ 6599 # 9652

Ex Output:
-7165


Ex Input:
2808 @ 9510 # 4684 @ 8160 # 7003 # 6631 # 9199 # 455

Ex Output:
-7494


Ex Input:
6036 @ 9181 # 7291

Ex Output:

7926