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:
4364 @ 4363 # 5655 @ 5991 @ 3879 @ 2303 # 3321 @ 8300 @ 6059

Ex Output:
26283


Ex Input:
2367 @ 4877 @ 8467 @ 5488 # 987 # 8899

Ex Output:
11313


Ex Input:
3908 @ 3582 @ 7622 @ 6798 @ 7527 # 4057 # 8540 @ 5668

Ex Output:

22508