Instructions: 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.
Input: 6210 + 7295 + 5281 + 7242 + 1291 + 6634 + 8797
Output:
-30330