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: 2010 + 6744 - 5577 - 1182 + 8811
Example Output: -6786

Example Input: 3129 - 7101 - 6763 + 9310 + 4977
Example Output: 2706

Example Input: 9827 - 6836 + 9463 - 1992 - 97 + 5419 + 5878
Example Output:
-2008