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: 6729 # 1204 # 5514 # 8079
Example Output: -8068

Example Input: 5631 # 7224 @ 9746 # 8532 @ 8996 # 3971 # 8538 @ 5270 # 9789
Example Output: -8411

Example Input: 4424 # 1176 # 4847 # 9823 # 5655 @ 6928 # 3758
Example Output:
-13907

