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.

509 + 4840 + 5618 + 9163 + 802
-19914

7427 + 8795 - 4104 + 7720 - 6667
1683

7029 - 7244 + 4716 + 1269

8288