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: 2219 - 6451 + 1224 + 2776 + 8750 - 8397 - 5833 - 9401 - 554
Example Output: 20105

Example Input: 7746 - 2667 + 1801 - 5756 - 6076 - 6701 + 3002
Example Output: 24143

Example Input: 6207 + 5027 + 7147
Example Output:
-5967