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.

9051 - 8971 + 6555 - 1135 - 4091 + 9374 + 9487 + 1868
-4036

3719 - 4138 - 7321 - 9097 + 4558 + 9667 + 1909 + 647 - 6132
13626

1363 + 7653 + 7060 + 825 + 7086

-21261