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:
3284 - 2372 - 6880

Ex Output:
12536


Ex Input:
2010 + 6744 - 5577 - 1182 + 8811

Ex Output:
-6786


Ex Input:
1086 - 7477 - 9664 + 5904 - 8033 - 5563

Ex Output:

25919