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.

3681 + 1303 + 5556 + 9895 - 5012 - 6662
-1399

8294 + 6661 + 4555 + 6171
-9093

6015 - 4758 + 9332 + 3048 + 2544 - 1136 - 4093 + 2060 + 570

-1552