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: 1664 # 2003 # 3533
Example Output: -3872

Example Input: 8422 @ 5670 # 5825 @ 3613
Example Output: 11880

Example Input: 882 @ 4925 @ 1838 @ 8503 # 4423 @ 1036
Example Output:
12761