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.

9990 - 8613 - 152 + 4529
14226

5316 + 506 - 8402
13212

6666 + 4068 + 1057 + 5398 + 7947

-11804