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: 4224 + 9155 + 116 - 5148 - 7166 - 7397 - 3883 - 2139
Example Output: 20686

Example Input: 2178 - 6447 + 5843 + 9653 + 4633 - 5887 + 8815 - 6635 + 178
Example Output: -7975

Example Input: 5559 - 2168 - 5672 - 9820 - 7771 - 6532 - 9286
Example Output:
46808