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: 5191 # 7400 @ 7319 # 5932 @ 662 @ 1546
Example Output: 1386

Example Input: 4647 # 7779 # 3704
Example Output:
-6836