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.

4095 - 9640 - 5113 - 9355
28203

6063 + 9874 + 5939 - 5013 + 791
-5528

3109 + 3787 - 6967 - 6902 - 6509 + 4094 - 7514

23120