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: 6108 + 6734 + 3016 + 637 - 2671 - 5486 - 1133 + 1713 - 2180
Example Output: 5478

Example Input: 9085 + 2845 - 6159 + 1404 + 2110 - 8797
Example Output: 17682

Example Input: 5634 - 8761 + 9903 - 5180 + 1443 - 9446 + 1505
Example Output:
16170