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: 1767 @ 7166 @ 1543 @ 1185 @ 9966 # 6628
Example Output: 14999

Example Input: 4449 @ 4019 @ 7637
Example Output: 16105

Example Input: 2404 @ 4359 # 5006 # 2796 # 6139
Example Output:
-7178