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.

4101 + 2536 - 502
2067

8671 + 9945 - 8465 - 5276 + 1447
11020

9026 - 7554 + 3481

13099