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.

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

6881 + 1331 - 470 + 6067 - 9323
9276

1162 - 2144 + 1729 + 1736 - 4388 - 9809 + 8343 + 2420

3275