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: 3980 + 6122 + 3529 - 9952
Example Output: 4281

Example Input: 9438 - 4122 - 8942 - 1945 - 6254 - 8931 + 5352 - 8100 - 1978
Example Output:
44358