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: 5989 - 6394 + 3845 + 1679 - 5682 + 8226 - 674 - 1284
Example Output: 6273

Example Input: 7409 + 7579 + 4759 + 5088
Example Output: -10017

Example Input: 5662 - 8738 - 5311 + 4748 + 1209 + 9345 - 1014 - 1017 - 1565
Example Output:
8005