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: 136 - 3238 + 3781 - 6552 - 4884 + 5366 - 657
Example Output: 6320

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

Example Input: 7426 - 4858 + 7651 + 8895 + 5370 + 4287 + 5047
Example Output:
-18966