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:
7451 + 2964 + 1609 - 9543 - 679 + 381 - 9788 - 8125

Ex Output:
30632


Ex Input:
3337 + 9906 + 9733 - 853 + 5075 - 2064 + 9450 - 3886

Ex Output:
-24024


Ex Input:
5552 + 1937 - 5428 - 6258

Ex Output:

15301