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:
9751 - 3599 + 7441 - 2176 + 2662 + 9430 + 8207 + 5927 - 8529

Ex Output:
-9612


Ex Input:
2514 - 3539 - 8491 + 7351 - 1448

Ex Output:
8641


Ex Input:
4492 - 6058 + 53 - 9643 - 9898 + 2988 - 684 + 1473 + 8563

Ex Output:

17698