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:
826 - 6501 - 223 + 9761 - 8863

Ex Output:
6652


Ex Input:
781 + 6816 + 5971

Ex Output:
-12006


Ex Input:
5424 + 14 - 2276 - 9871 + 5103 + 7074 + 8796 + 7826

Ex Output:

-11242