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:
6020 + 1977 + 708 + 1899 + 3704
answer:
-2268


question:
4266 - 8914 - 9115 - 7595 - 3820 + 191 + 3199 - 4910
answer:
35230


question:
7876 - 4498 - 2943 - 6453
answer:

21770