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: 281 @ 7793 @ 5184 # 2962 @ 4511

Output: 14807


Input: Consider Input: 6385 # 7829 @ 2463 @ 3411 # 652 # 5880 # 6454

Output: -8556


Input: Consider Input: 60 # 7717 # 45 # 6450 @ 9079 # 4279


Output: -9352