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: 8603 @ 6832 @ 2275 # 7856
Example Output: 9854

Example Input: 6729 # 1204 # 5514 # 8079
Example Output: -8068

Example Input: 9905 @ 6118 # 1284 @ 7834 @ 1499
Example Output:
24072