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: 2653 @ 9718 # 3237 @ 2973 # 6895 # 18

Output: 5194


Input: Consider Input: 2057 # 2330 # 9059 # 2713 # 7404 @ 4349

Output: -15100


Input: Consider Input: 6648 # 6097 # 7127 # 2559 @ 1268 # 3501


Output: -11368


