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:
2372 + 1272 - 6861 - 1715 - 7374 + 9798 - 7485

Ex Output:
14737


Ex Input:
84 - 4898 - 2883 + 5111 - 7812 - 5830 + 3330 + 8500 + 6754

Ex Output:
-2188


Ex Input:
9955 - 4915 - 9910 + 3997 - 9596 - 1910

Ex Output:

32289