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.

6433 + 6891 + 2386 - 7923 - 2419 + 7641
-143

9616 - 8145 + 562 + 3160 - 8906 - 360 + 9291 + 7609 + 460
5945

1087 + 4219 + 800 - 6964 - 3915 + 100 - 8015 - 2782 - 8919

26563