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:
318 - 2977 - 9352 - 3082 - 5224 + 3028 - 7022

Ex Output:
24947


Ex Input:
6051 + 6310 + 7813 + 2282 - 7601 + 4598 - 1928 - 9696 - 6497

Ex Output:
10770


Ex Input:
3975 + 4983 + 1404 + 7299 + 4472 - 4 + 7559 - 3076

Ex Output:

-18662