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: 240 - 438 + 497 - 5901 - 1960 + 4782 + 6400 - 4055

SOLUTION: 915

PROBLEM: 7528 - 4788 + 7674 + 4839 + 6930 + 4883 + 9734

SOLUTION: -21744

PROBLEM: 7031 - 3433 + 1651 - 1450 + 247 - 1837 - 3521 + 5812 + 4991

SOLUTION:
4571