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.

5299 - 8791 + 6861
7229

569 + 2078 + 2757 - 9211
4945

7906 - 3722 + 8833 + 3068 - 3442 + 7266 - 6933 - 8145 - 1144

12125