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: 7775 @ 8190 # 2579 @ 1003
Example Output: 14389

Example Input: 4978 @ 6768 # 2130 @ 5075 # 6032
Example Output:
8659

