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.

2776 - 8931 + 2788 + 8315 - 6570 + 8385 - 2789
1578

938 + 566 + 5270 + 5634 - 7451 - 114
-2967

7791 - 9426 + 1439 + 8515 + 6539 - 6964 + 2022 - 3494

9160