TASK DEFINITION: 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.
PROBLEM: 9990 - 8613 - 152 + 4529

SOLUTION: 14226

PROBLEM: 8838 + 1241 - 4918 - 8353 - 4691 - 5880

SOLUTION: 31439

PROBLEM: 8723 - 1592 + 2196 + 7511 - 8500 + 9308 + 6219

SOLUTION:
-6419