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.

4515 - 2156 - 8427 - 2175
17273

1930 - 7631 - 6614 + 5805 + 7376
2994

9929 + 2651 + 6102 + 6434

-5258