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.

1971 - 5591 + 4038 + 5571
-2047

6874 + 7308 - 3041
2607

427 - 7974 - 7564 + 2404 - 4955 - 1239 - 1518 + 906

20367