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.

42 + 6517 - 146 + 304 - 4759 + 148 - 3822
1800

473 - 2568 + 9771 - 2525 + 3277 + 261 - 8230 + 6021
-5534

4295 - 2599 - 3146 + 604 - 2213

11649