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: 290 @ 5200 # 3274 # 8548

Output: -6332


Input: Consider Input: 3816 @ 8163 # 9273 @ 2037 @ 8051 @ 826

Output: 13620


Input: Consider Input: 5316 @ 506 # 8402


Output: -2580