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: 7555 + 8285 + 7132 + 9363 - 3515

SOLUTION: -13710

PROBLEM: 7163 + 3916 + 4926 + 2532 - 2743 - 5389 + 7290

SOLUTION: -3369

PROBLEM: 215 - 649 + 9930 - 1193 - 4606 + 4342

SOLUTION:
-7609