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:
1420 - 1910 - 3500 + 9535 + 3807 - 5009 - 1271 - 3426
answer:
3194


question:
5000 + 8474 - 7071 - 6976 + 6373 - 466
answer:
4666


question:
2984 - 596 - 8941 + 4235 + 5264 + 351 - 3797 + 7168 - 55
answer:

-645