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.

Input: Consider Input: 9909 - 1362 + 9804 + 5190 + 8223 - 3758

Output: -8188


Input: Consider Input: 8213 + 7145 + 5203 - 2621 + 1654 - 1844

Output: -1324


Input: Consider Input: 5796 + 7778 + 9714 + 5256 - 5547 - 2702 - 6610 - 2244


Output: 151