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.

3631 - 7822 - 8283 + 4667 - 697
15766

8929 - 6145 + 8551 - 1836 + 9159
-800

5634 - 7997 + 8248 + 1465 - 3986

7904