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: 4400 @ 9261 @ 3016

Output: 16677


Input: Consider Input: 1482 # 6461 @ 804 # 8626 # 8564

Output: -21365


Input: Consider Input: 6073 @ 172 @ 5250 @ 7156 # 8705 # 2236


Output: 7710