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: 335 + 4730 + 4604 - 5559 + 7282 - 7812
Example Output: -2910

Example Input: 556 + 5223 - 5888 + 4866
Example Output: -3645

Example Input: 2330 - 2879 + 1887 + 5314 + 2834 - 4948 - 3105 + 9503
Example Output:
-6276