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: 6312 @ 1446 # 1616 @ 6758 # 9137 @ 6041
Example Output: 9804

Example Input: 16 @ 4157 @ 3953 @ 8863
Example Output: 16989

Example Input: 13 # 9358 @ 7733
Example Output:
-1612