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:
9806 + 7051 + 6703 + 4233 - 276

Ex Output:
-7905


Ex Input:
4224 - 9761 - 8262 + 6568 - 5026 + 916 - 5225 - 2454 - 1897

Ex Output:
29365


Ex Input:
1480 - 9825 - 9193 - 3594 - 4721 - 4566

Ex Output:

33379