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

4054 + 5873 - 3926 - 2524 + 5551 - 1721
801

5137 + 4207 + 1156

-226