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: 4282 @ 2191 # 7458 @ 8928
Example Output: 7943

Example Input: 440 @ 5472 # 6900 # 3389
Example Output: -4377

Example Input: 5554 # 7768 # 7245 @ 1373 # 8897 # 3553 # 9968 # 9896
Example Output:
-40400