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:
1834 - 2630 + 3119 - 3024 - 1805 + 5287 + 9826

Ex Output:
-8939


Ex Input:
3997 - 5279 - 8866 - 8214 - 3538 + 6690 - 4565 + 30

Ex Output:
27739


Ex Input:
1855 - 9818 + 3927 + 9533 - 8557 + 619 - 7543 - 2844

Ex Output:

16538