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: 8109 @ 8997 # 3310 # 8023 @ 2548 @ 9625 # 7170
Example Output: 10776

Example Input: 4071 # 2406 @ 1349 @ 5528 @ 7426 @ 2448 # 1981 # 7844
Example Output: 8591

Example Input: 470 # 6980 # 990 # 7234 @ 6950 @ 395
Example Output:
-7389