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: 9467 + 7102 - 1964
Example Output: 4329

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

Example Input: 7525 + 246 + 1195 - 5913 + 5229
Example Output:
6768