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.

6163 + 7356 + 5264 - 4766 + 9373 + 1271
-12335

5753 - 4358 + 6312 + 2406 + 5334 - 4718 + 6262
-5485

6729 - 1204 - 5514 - 8079

21526