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.

1078 + 2128 + 513 + 5898 - 8020
559

8398 - 1163 + 8396 + 4440 + 9289
-12564

703 - 5253 + 7757 + 2134 - 2333 + 2583 - 4707 + 9466 - 8404

-540