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

Example Input: 4039 # 2314 # 8257 # 5828 @ 2387 @ 4250 @ 5479 # 991
Example Output: -1235

Example Input: 9273 # 8850 @ 3050
Example Output: 3473

Example Input: 5661 @ 5694 @ 8212 # 8431 # 6340 @ 4336 @ 2022 # 5623
Example Output:
5531