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: 2653 @ 9718 # 3237 @ 2973 # 6895 # 18
Example Output: 5194

Example Input: 2763 @ 869 # 8299
Example Output: -4667

Example Input: 6554 @ 6246 @ 5383 @ 6788 @ 2961 @ 2724 # 5522 # 8979 # 4207
Example Output:
11948