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:
8243 + 5509 - 2652 - 916 - 1636 + 9824

Ex Output:
-1886


Ex Input:
5758 + 9179 - 1765 - 4142 - 8736

Ex Output:
11222


Ex Input:
5877 - 1045 + 4929 + 6307 + 7719 + 9320 + 8296 + 3598 - 4524

Ex Output:

-28723