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


question:
2776 - 8931 + 2788 + 8315 - 6570 + 8385 - 2789
answer:
1578


question:
4134 - 8423 - 9275 + 6375 + 726 - 8247
answer:

22978