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

1815 - 3167 - 773
5755

3797 + 2563 + 6550 + 4448

-9764