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.

2537 - 3199 + 5925 + 8172 + 3564 + 8810
-20735

981 + 3338 + 96 + 3479 + 574 + 2567 + 3009 + 2356 - 4663
-9775

412 - 998 - 4085 - 1960 - 97 + 116 + 9905 + 1413

-3882