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: 8280 # 2607 # 4185 # 9243 @ 9839
Example Output: 2084

Example Input: 2919 # 2741 @ 497 @ 5230 @ 5250 @ 1797 # 4567 @ 8995 @ 6960
Example Output: 24340

Example Input: 7613 # 9439 # 2956 # 3427 @ 7958
Example Output:
-251