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: 8109 @ 8997 # 3310 # 8023 @ 2548 @ 9625 # 7170
Example Output: 10776

Example Input: 643 @ 9262 # 6489 @ 1803 @ 6271
Example Output: 11490

Example Input: 5779 # 5313 # 1692
Example Output:
-1226