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: 932 # 7028 @ 5402 # 9015 @ 2110
Example Output: -7599

Example Input: 4449 @ 4019 @ 7637
Example Output: 16105

Example Input: 5423 # 9096 @ 6059 @ 659 # 393 # 2105
Example Output:
547

