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: 6433 + 6891 + 2386 - 7923 - 2419 + 7641

SOLUTION: -143

PROBLEM: 3909 - 4736 + 2593 + 3592

SOLUTION: 2460

PROBLEM: 2932 - 4372 - 9818 - 101 - 5357 - 8354 + 7479

SOLUTION:
23455