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: 8398 - 1163 + 8396 + 4440 + 9289
Example Output: -12564

Example Input: 5299 - 8791 + 6861
Example Output: 7229

Example Input: 7479 + 7057 + 3293 - 1648 - 6988 + 3373 + 6993 + 2256 + 3696
Example Output:
-10553