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: 812 + 6106 - 2904 + 7738 + 7655 - 6987
Example Output: -10796

Example Input: 9990 - 8613 - 152 + 4529
Example Output: 14226

Example Input: 366 - 7355 + 7073 + 2313 + 2919 - 7474 - 7303
Example Output:
10193