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.

3980 + 6122 + 3529 - 9952
4281

569 + 2078 + 2757 - 9211
4945

2480 - 8716 + 5571 - 504 - 4905 - 392 - 5105 + 906

15625