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: 8915 @ 8709 # 6716 @ 4326
Example Output: 15234

Example Input: 2932 # 4372 # 9818 # 101 # 5357 # 8354 @ 7479
Example Output: -17591

Example Input: 7633 # 3518 # 2533 @ 3044 # 4704
Example Output:
-78