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: 6844 @ 1340 # 4174 # 5664 @ 4911 # 5241
Example Output: -1984

Example Input: 5191 # 7400 @ 7319 # 5932 @ 662 @ 1546
Example Output: 1386

Example Input: 1289 # 725 @ 8131 @ 6019 @ 3460 @ 1727 # 8097 # 7477
Example Output:
4327