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:
610 # 7967 # 8700 # 5966 @ 4310 @ 9963 # 8525

Ex Output:
-16275


Ex Input:
8045 @ 7755 # 7077 # 209 @ 8324 @ 9768 # 6169 @ 4387

Ex Output:
24824


Ex Input:
2073 @ 9172 @ 1885 @ 4049 @ 9955 # 818 # 1507 # 7798

Ex Output:

17011