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: 7272 @ 8958 # 7231 @ 6616
Example Output: 15615

Example Input: 2806 # 6120 @ 8567 @ 1946 @ 8985 # 9834 # 368 # 454 @ 5455
Example Output: 10983

Example Input: 6439 # 6685 @ 6156 # 3314 @ 6845 # 6872
Example Output:
2569