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:
1462 + 1045 - 6631 - 4510 + 2234 + 4084 - 6610 + 2698

Ex Output:
9152


Ex Input:
8885 - 9148 - 6665 - 7609 + 4183 + 3591 + 5158 - 5649 + 9511

Ex Output:
15513


Ex Input:
5181 - 8177 + 9531 + 3023

Ex Output:

804