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: 2367 @ 4877 @ 8467 @ 5488 # 987 # 8899
Example Output: 11313

Example Input: 1655 @ 6751 # 5432 @ 5817 @ 3005 # 1615
Example Output: 10181

Example Input: 5916 @ 1668 # 1969 # 6115 # 3527 # 5212 @ 5561 @ 57
Example Output:
-3621