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.

4773 + 2177 - 7850 + 9364 - 3636 + 4921
-203

9909 - 1362 + 9804 + 5190 + 8223 - 3758
-8188

4855 - 3139 + 3210 + 5585 + 2656 + 5316 + 12 - 3337

-5448