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: 1259 - 2367 + 9919 + 7196 + 4121

SOLUTION: -17610

PROBLEM: 3719 - 4138 - 7321 - 9097 + 4558 + 9667 + 1909 + 647 - 6132

SOLUTION: 13626

PROBLEM: 1673 - 3914 + 8016 + 5937 - 8915 + 4818

SOLUTION:
-4269