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: 2065 @ 3769 @ 9915 # 6270 @ 3929 @ 5328 @ 6079 @ 5250 @ 843

Output: 30908


Input: Consider Input: 2996 @ 6178 @ 7214 # 172 # 3711

Output: 12505


Input: Consider Input: 2666 # 3880 # 7186 @ 4000 @ 4735


Output: 335