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

Ex Output:
10770


Ex Input:
2603 + 1868 - 4242

Ex Output:
4977


Ex Input:
2852 - 4 - 2979 - 2022 - 7414 - 469 - 2944 + 7716

Ex Output:

10968