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: 9285 # 5492 @ 6629 # 5477 @ 5969 # 8754
Example Output: 2160

Example Input: 5142 # 5370 # 8292 @ 827 @ 9263 # 9184 @ 8692
Example Output: 1078

Example Input: 2815 # 1513 # 2542 # 8366 @ 9104 @ 4327 # 8813
Example Output:
-4988