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: 1837 @ 4842 # 1682 @ 5953
Example Output: 10950

Example Input: 1664 # 2003 # 3533
Example Output: -3872

Example Input: 4929 @ 8906 # 927
Example Output:
12908