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:
146 - 5209 + 892
answer:
4463


question:
8602 - 1293 - 8063 - 4529 + 453 - 6407
answer:
28441


question:
5452 + 307 - 108 - 844 + 1828
answer:

4269