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: 4195 + 6940 - 1053 - 4433 + 1540

SOLUTION: 1201

PROBLEM: 3123 + 9519 - 2864 + 9440 - 756 + 252

SOLUTION: -12468

PROBLEM: 8885 - 9148 - 6665 - 7609 + 4183 + 3591 + 5158 - 5649 + 9511

SOLUTION:
15513