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.

8929 - 6145 + 8551 - 1836 + 9159
-800

1815 - 3167 - 773
5755

1953 - 3854 - 1362 + 6267 - 3664 - 901 + 7969 + 111

-2613