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: 875 + 1299 - 1721 - 4432 - 7136 - 2468

Answer: 15333


Question: 3980 + 6122 + 3529 - 9952

Answer: 4281


Question: 7644 + 8146 + 6810 + 9469

Answer:
-16781