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: 8403 + 1868 + 5827 + 5471 - 3746 + 1027 - 5777
Example Output: 3733

Example Input: 3254 - 200 + 4450 - 6393 - 2480 + 4564 + 9650
Example Output: -6337

Example Input: 7931 - 5554 + 9254 - 1525 - 245 - 122 + 785 + 4416 - 6846
Example Output:
7768