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: 2996 @ 6178 @ 7214 # 172 # 3711
Example Output: 12505

Example Input: 3363 @ 4009 @ 5612 # 7774 @ 1547 @ 531 @ 9025 @ 3155 # 3948
Example Output: 15520

Example Input: 3883 # 8088 @ 7669
Example Output:
3464