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.

Ex Input:
6108 + 2133 + 8600

Ex Output:
-4625


Ex Input:
4035 - 7636 + 5719 + 8287 + 9317 - 8218 + 4932 + 2275 - 9347

Ex Output:
-1294


Ex Input:
7173 + 6651 + 1920 + 5424 + 7783 - 4793 - 2612 + 1753 + 666

Ex Output:

-9619