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: 9826 - 5862 + 4973 - 7723 - 8510 + 6631 + 9611 + 1510 + 489
Example Output: 8707

Example Input: 6800 + 2564 + 8444 + 1912
Example Output:
-6120