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: 8915 @ 8709 # 6716 @ 4326
Example Output: 15234

Example Input: 2182 @ 8380 # 337
Example Output: 10225

Example Input: 697 @ 6357 @ 8125 @ 2542 # 8717 # 6354
Example Output:
2650