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: 9924 @ 6266 # 7022 # 7976 # 2541 @ 5396
Example Output: 4047

Example Input: 5631 # 7224 @ 9746 # 8532 @ 8996 # 3971 # 8538 @ 5270 # 9789
Example Output: -8411

Example Input: 889 @ 8124 @ 8807
Example Output:
17820