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: 3556 # 1722 @ 9362 # 7616 # 7893

Output: -4313


Input: Consider Input: 3347 # 2950 @ 6671 @ 4670 # 7283

Output: 4455


Input: Consider Input: 2670 @ 5855 @ 4145 @ 6193 # 2327 # 3390 # 6122 # 4535


Output: 2489