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:
1471 - 7798 + 6514 + 8053 + 9926

Ex Output:
-15224


Ex Input:
5989 - 6394 + 3845 + 1679 - 5682 + 8226 - 674 - 1284

Ex Output:
6273


Ex Input:
5133 + 1358 - 3559 - 4384 - 9588

Ex Output:

21306