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:
5088 - 9353 - 2772 + 3908 + 9196 + 4709

Ex Output:
-600


Ex Input:
6603 - 3783 + 3030 - 5787 + 8478 + 3046 - 1629

Ex Output:
3248


Ex Input:
3970 - 8486 - 9402 - 8030 + 4724 + 8858

Ex Output:

16306