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.

7930 - 2835 - 1925 - 6613
19303

6639 - 5724 - 3521 - 6709 - 6185 + 6067 + 9560 - 9829 + 8371
14609

3405 - 1336 - 951 + 61 - 7383

13014