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:
1592 + 7031 - 1902 + 5922 - 1351 + 8340 - 2032

Ex Output:
-14416


Ex Input:
4224 + 9155 + 116 - 5148 - 7166 - 7397 - 3883 - 2139

Ex Output:
20686


Ex Input:
6365 + 2679 - 36 + 7176 + 1453

Ex Output:

-4907