instruction:
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.
question:
2144 - 4158 + 4207
answer:
2095


question:
3719 - 4138 - 7321 - 9097 + 4558 + 9667 + 1909 + 647 - 6132
answer:
13626


question:
4831 + 8540 + 2158
answer:

-5867