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.

6020 + 1977 + 708 + 1899 + 3704
-2268

9485 + 6349 - 1527 - 4730 - 5865 + 851 - 7415 - 3548 + 2868
22502

4191 + 1526 + 211

2454