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

Input: Consider Input: 2214 @ 2042 # 8931

Output: -4675


Input: Consider Input: 9549 @ 21 # 6714 # 2406 # 2527 # 8527 @ 1769

Output: -8835


Input: Consider Input: 2281 @ 7235 # 7840 # 4825 # 4815 # 6208 @ 7743 # 6816 @ 8729


Output: -4516