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: 136 + 9772 - 2848 - 4980 + 6156 - 883 + 5407 + 3211
Example Output: -15699

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

Example Input: 8582 - 5813 + 1519 - 6445 - 2377 - 4469 - 272 + 546
Example Output:
25893