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: 7165 @ 3630 @ 9021 # 4140 @ 319

Output: 15995

Input: Consider Input: 8625 @ 3267 # 2323 # 3569

Output: 6000

Input: Consider Input: 8306 # 9334 @ 9524 # 277 @ 5343 @ 312 # 7687
Output: 6187