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.

4117 - 3380 - 4784
12281

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

4226 - 927 + 8517

-3364