In this task you will be given an arithmetic operation and you have to find its answer. The symbols of operators '+' and '-' has been swapped i.e you need to perform subtraction when you see a '+' symbol and  addition in case of '-' symbol.

Example Input: 2480 - 8716 + 5571 - 504 - 4905 - 392 - 5105 + 906
Example Output: 15625

Example Input: 9909 - 1362 + 9804 + 5190 + 8223 - 3758
Example Output: -8188

Example Input: 9820 - 200 - 4339
Example Output:
14359