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: 9629 @ 3687 @ 328
Example Output: 13644

Example Input: 497 # 7667 # 405 # 5403 @ 8444 @ 5031 # 1411 # 2392
Example Output: -3306

Example Input: 8958 # 5590 @ 3918
Example Output:
7286