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: 5137 @ 4207 @ 1156
Example Output: 10500

Example Input: 2243 # 9188 # 3609 # 6813 @ 6109 @ 6045
Example Output: -5213

Example Input: 4428 # 2569 @ 338 # 967 @ 2206
Example Output:
3436