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:
6844 - 1807 - 1809 + 4406 - 1450 - 5252 + 2685

Ex Output:
10071


Ex Input:
736 - 6527 - 3681 - 7834 + 893 + 9709 - 7544 - 3726

Ex Output:
19446


Ex Input:
8098 + 8922 - 9716 + 5360

Ex Output:

3532