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.

555 + 1174 + 4465 + 6452 + 3211 + 2960 - 856 + 4997 - 9930
-11918

452 - 5631 - 8307 - 1886 + 4631 + 1695 + 4411 - 769
6308

2167 - 8760 - 4771 - 8633 + 7929 + 9784 + 6892

-274