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:
9488 + 7771 + 5889 + 9584 + 3302 - 1602 + 5806 - 8895 - 8030

Ex Output:
-4337


Ex Input:
1312 - 814 - 8592 - 4040 - 5158 + 6817

Ex Output:
13099


Ex Input:
3300 + 9942 - 5411 + 8701 + 3187 - 6983 + 9809 - 43 + 1790

Ex Output:

-17692