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: 42 + 6517 - 146 + 304 - 4759 + 148 - 3822

SOLUTION: 1800

PROBLEM: 7165 + 3630 + 9021 - 4140 + 319

SOLUTION: -1665

PROBLEM: 3347 - 2950 + 6671 + 4670 - 7283

SOLUTION:
2239