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: 9889 @ 8457 # 4692
Example Output: 13654

Example Input: 3529 @ 2441 @ 1274 # 3916 @ 9691 @ 1272 # 1286
Example Output: 13005

Example Input: 5249 @ 3813 # 563
Example Output:
8499