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: 3407 @ 917 # 567 @ 5987 # 5936
Example Output: 3808

Example Input: 4400 @ 9261 @ 3016
Example Output: 16677

Example Input: 6052 @ 4382 # 1109 # 9800 @ 6872 # 9285 # 4397
Example Output:
-7285