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:
1078 + 2128 + 513 + 5898 - 8020
answer:
559


question:
365 + 3086 - 9118 - 8101 + 6550 + 80 - 1897 - 1498 - 8498
answer:
19761


question:
4811 + 1843 + 5389 - 9883 - 2849 - 8160
answer:

18471