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: 2724 @ 8119 @ 1049 @ 9004
Example Output: 20896

Example Input: 3894 # 3818 # 2119 # 6333
Example Output: -8376

Example Input: 3397 # 2001 # 3041 @ 3208 @ 1670 # 4907
Example Output:
-1674