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.
Example: 5 + 3
Example solution: 2
Example explanation: Here, '+' represents subtraction operation. So, the answer is 2 (5-3=2).

Problem: 8396 + 7703 + 9589 - 5172 - 6254 + 5756 + 6148 - 7926 - 8269

Solution: 6821