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: 7217 @ 2604 @ 9974 @ 8133 @ 8987 # 6381 # 7662
Example Output: 22872

Example Input: 1614 @ 5794 # 2578
Example Output: 4830

Example Input: 8914 # 5175 # 6907 # 2704
Example Output:
-5872