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: 1724 - 4426 - 960 - 8997 - 5797 + 8037 - 7699 + 3023
Example Output: 18543

Example Input: 7270 + 4138 - 1696 - 5719 - 9735 + 2360
Example Output: 17922

Example Input: 9447 - 88 - 9606 - 2754
Example Output:
21895