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 Input: 1860 - 6675 + 8615 + 485 + 6302 - 3385 + 1568
Example Output: -5050

Example Input: 9885 + 402 + 66 + 4818 + 2654 - 4301 + 2712 + 5842 - 2959
Example Output: 651

Example Input: 7006 + 6105 + 204 - 3666 + 2134
Example Output:
2229