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: 6543 @ 9353 @ 2169 # 4681 @ 6446
Example Output: 19830

Example Input: 4449 @ 4019 @ 7637
Example Output: 16105

Example Input: 7236 # 5228 # 3549 @ 5202 @ 1276 # 7603 @ 1181
Example Output:
-1485