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: 8513 - 7119 - 47

SOLUTION: 15679

PROBLEM: 4331 - 362 - 8646 - 8722 + 6424 + 4083 - 579 + 4561

SOLUTION: 7572

PROBLEM: 1902 - 615 + 6852 - 1627 - 1592 + 3427

SOLUTION:
-4543