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.
Q: 6218 + 1401 + 8350 + 4533 - 6633 - 6672 - 6623
A: 
11862