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.

1691 - 755 + 5734 - 4774 + 4915 - 7249 - 47
3867

7202 - 7230 - 3695 + 2434 + 5934 + 5439 + 687 + 2011
1622

5779 - 5313 - 1692

12784