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: 1721 # 7193 # 7392 # 8999 # 7847 @ 5571 @ 4439 @ 7158 # 6030
Example Output: -18572

Example Input: 7295 @ 8477 @ 8646 @ 3487 # 114 # 9184
Example Output: 18607

Example Input: 3927 @ 6989 # 1421 @ 5677
Example Output:
15172