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: 9720 @ 6485 @ 1745 @ 728
Example Output: 18678

Example Input: 6120 # 9271 # 7167 @ 6916 # 2510 @ 7854 # 7909 # 1960 # 3775
Example Output: -11702

Example Input: 9206 @ 3490 @ 3330 # 797 # 9955 @ 609
Example Output:
5883

