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

Ex Output:
24824


Ex Input:
9645 @ 911 @ 6748 # 3005 # 3625 # 87 @ 3003 # 5587 # 1382

Ex Output:
6621


Ex Input:
9974 @ 6674 # 5232 @ 5421 # 536 # 7313 @ 4982 @ 2639 @ 9099

Ex Output:

25708