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.

2603 + 1868 - 4242
4977

335 + 4730 + 4604 - 5559 + 7282 - 7812
-2910

4264 - 4438 + 3871 + 7585 - 540 - 3455 - 6016

7257