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: 381 # 4084 # 9377 # 3092
Example Output: -16172

Example Input: 9084 # 8139 @ 4937
Example Output: 5882

Example Input: 6720 # 4223 @ 5399 # 9312 # 3020 # 436 @ 6399 # 2509
Example Output:
-982