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: 7457 - 9732 + 1691 + 2450 + 16 + 1610 + 1729

SOLUTION: 9693

PROBLEM: 2514 - 3539 - 8491 + 7351 - 1448

SOLUTION: 8641

PROBLEM: 3570 + 6430 + 5548 + 815 - 7096 - 6035

SOLUTION:
3908