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: 2030 # 4671 # 6277 @ 7403 @ 211 @ 1842 # 9247
Example Output: -8709

Example Input: 4767 # 4944 # 4202 @ 2582
Example Output: -1797

Example Input: 7866 @ 8504 @ 5203 # 1800 @ 8756 # 8931 @ 1170 @ 7402 # 1977
Example Output:
26193