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:
1767 @ 7166 @ 1543 @ 1185 @ 9966 # 6628

Ex Output:
14999

Ex Input:
8780 # 5826 # 420 @ 8814 @ 5786 # 1725

Ex Output:
15409

Ex Input:
758 @ 1664 @ 5481 # 1654 # 1804 @ 5232 # 9130

Ex Output:
547