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: 6607 @ 8561 @ 5571 # 6468 @ 8173 # 7134 @ 2102 # 7688
Example Output: 9724

Example Input: 6385 # 7829 @ 2463 @ 3411 # 652 # 5880 # 6454
Example Output: -8556

Example Input: 4686 # 1742 # 5667 # 6708 @ 449 @ 5359
Example Output:
-3623