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: 7021 # 2043 @ 7414 # 2632 @ 2939 @ 8718 @ 2731
Example Output: 24148

Example Input: 1566 @ 1639 # 814 # 5278 @ 1717 # 4304 # 6735 @ 1407
Example Output: -10802

Example Input: 117 # 3952 # 5216 @ 400 @ 1299
Example Output:
-7352