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:
4310 + 5678 + 9065 - 8181 + 5925 - 3189 + 558

Ex Output:
-5546


Ex Input:
6844 + 1340 - 4174 - 5664 + 4911 - 5241

Ex Output:
15672


Ex Input:
4742 - 7610 + 8495 + 1114 + 6107 - 1203

Ex Output:

-2161