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: 1021 # 2896 # 8239 # 5207 # 1962 # 5346
Example Output: -22629

Example Input: 735 @ 7682 # 2492 # 7149 @ 7531 @ 4967 @ 3646 @ 6439
Example Output: 21359

Example Input: 1471 @ 6113 @ 3177 # 2507 # 2358 @ 6654
Example Output:
12550