Definition: 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: 6863 @ 7051 @ 8704 # 8353 # 3628 # 4873 # 5172 # 6257
Output:
-5665