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: 7930 - 2835 - 1925 - 6613
Example Output: 19303

Example Input: 3123 + 9519 - 2864 + 9440 - 756 + 252
Example Output: -12468

Example Input: 9467 + 7102 - 1964
Example Output:
4329