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: 1592 - 2894 - 9980 + 4503 - 4006 - 8338 - 6314 + 4860 + 6836
Example Output: 16925

Example Input: 169 + 4940 + 7593 - 4532 + 2433 - 9730 - 6448 - 3026 - 2882
Example Output: 11821

Example Input: 3835 + 4789 - 5658 + 6282 + 7333 - 3579 + 2793 + 862
Example Output:
-8987