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.

8901 - 4785 + 1969 + 5985 + 517 + 5651 + 170
-606

365 + 3086 - 9118 - 8101 + 6550 + 80 - 1897 - 1498 - 8498
19761

4151 + 4432 - 9403 + 9800 - 901 + 5508 + 3237

-8522