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: 9273 # 8850 @ 3050
Example Output: 3473

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

Example Input: 5802 # 4850 @ 6267 @ 7299
Example Output:
14518