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: 6894 + 3927 + 7884 - 4132 - 6563 + 4281

SOLUTION: 1497

PROBLEM: 4700 + 6640 + 3352 - 3114 - 7674 - 8204 + 8654 + 8091 - 2969

SOLUTION: -76

PROBLEM: 5162 - 9401 + 9409 + 9726 + 1971 - 3005 + 2760 + 1 - 2451

SOLUTION:
-3848