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: 1566 @ 1639 # 814 # 5278 @ 1717 # 4304 # 6735 @ 1407
Example Output: -10802

Example Input: 3367 # 4567 @ 8786 @ 9643 @ 105 # 6364 @ 9695 # 2387 @ 8798
Example Output: 27076

Example Input: 4508 @ 7894 # 9241 # 2769 @ 2630 # 8890 @ 8936
Example Output:
3068