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: 781 + 6816 + 5971

SOLUTION: -12006

PROBLEM: 7163 + 3916 + 4926 + 2532 - 2743 - 5389 + 7290

SOLUTION: -3369

PROBLEM: 7926 + 7592 + 2267 + 8880 + 7790 + 263 - 2814 + 1057 - 2356

SOLUTION:
-14753