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: 555 + 1174 + 4465 + 6452 + 3211 + 2960 - 856 + 4997 - 9930
Example Output: -11918

Example Input: 5444 + 2542 - 6861 + 2740 - 4508 + 478 - 1138 + 7229
Example Output: 4962

Example Input: 326 + 26 - 796 - 1069 + 8105 + 7255 - 1369 + 5671 - 9886
Example Output:
-7611