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.

5270 - 8957 + 6318 - 3390
11299

9491 + 8647 - 4571 + 8815 - 4816 - 8552 + 1794
8174

8883 - 3349 - 6933 + 2226 + 6260 + 2909 + 9495 - 6687 + 50

4912