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: 826 # 6501 # 223 @ 9761 # 8863

Output: -5000


Input: Consider Input: 3462 @ 9743 @ 8298

Output: 21503


Input: Consider Input: 4496 @ 2550 @ 6681


Output: 13727