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.

3089 - 6778 - 3604 - 1052 - 1332
15855

8135 - 2883 + 7793 - 4176
7401

6748 - 4648 + 2517 + 5487

3392