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: 427 # 7974 # 7564 @ 2404 # 4955 # 1239 # 1518 @ 906
Example Output: -19513

Example Input: 6050 # 5266 # 3005
Example Output: -2221

Example Input: 2893 @ 6308 @ 4653 # 8577
Example Output:
5277