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:
4483 + 3021 - 5582 - 3918 + 8842

Ex Output:
2120


Ex Input:
8838 + 1241 - 4918 - 8353 - 4691 - 5880

Ex Output:
31439


Ex Input:
6756 + 3683 + 3682 - 3998 + 6904 + 9647

Ex Output:

-13162