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

Ex Output:
3248


Ex Input:
2348 - 6075 + 2149 - 1926 - 9532 - 9774 + 2760 - 6500 + 8335

Ex Output:
22911


Ex Input:
8598 - 2689 + 1997

Ex Output:

9290