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:
5046 # 9480 # 3079 @ 8929 # 1334 # 6211 @ 3240 @ 3825

Ex Output:
936


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

Ex Output:
11313


Ex Input:
2466 @ 1725 @ 4691

Ex Output:

8882