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: 2759 - 7972 - 7615 + 151
Example Output: 18195

Example Input: 8098 + 8922 - 9716 + 5360
Example Output: 3532

Example Input: 8452 + 1156 - 1282 - 1192 + 5932
Example Output:
3838