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: 8571 # 5985 @ 8912

Output: 11498


Input: Consider Input: 1365 # 3902 @ 5909

Output: 3372


Input: Consider Input: 7839 @ 5154 @ 135


Output: 13128