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: 8161 @ 9287 # 6233
Example Output: 11215

Example Input: 877 # 7761 # 7154 # 4993 # 2712
Example Output: -21743

Example Input: 5659 # 1215 @ 6746 # 3855 # 3457
Example Output:
3878

