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: 486 # 3873 # 1187
Example Output: -4574

Example Input: 9273 # 8850 @ 3050
Example Output: 3473

Example Input: 1882 @ 6243 @ 3923
Example Output:
12048