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:
8098 + 8922 - 9716 + 5360

Ex Output:
3532


Ex Input:
1887 - 5213 + 516 - 4107 - 7681 - 125 - 1788 + 124 - 1460

Ex Output:
21621


Ex Input:
6695 + 8074 + 9039

Ex Output:

-10418