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.

6042 + 4328 - 5171 + 23 + 4485 + 8072 + 4298
-9993

146 - 5209 + 892
4463

7650 + 6374 + 6155 - 4055 - 1005 - 7163 + 7912

-568