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.

7337 + 5801 - 8640 - 4143 - 2557
16876

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

4462 + 6234 + 8715 + 6478 + 4140 - 5122 - 4291 - 8187

-3505