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: 1559 # 9981 # 6881
Example Output: -15303

Example Input: 1709 # 2270 # 1077 # 9681
Example Output: -11319

Example Input: 6348 # 2614 @ 3559 @ 9670 # 1137 # 9684
Example Output:
6142

