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: 7894 @ 7649 # 4792
Example Output: 10751

Example Input: 2560 @ 144 @ 6785 @ 572 # 5190 @ 1929
Example Output: 6800

Example Input: 8865 # 4288 # 3326 @ 3965 # 8670
Example Output:
-3454