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: 3421 - 71 + 7643 - 8661 + 520 - 6536 + 9411

SOLUTION: 1115

PROBLEM: 452 - 5631 - 8307 - 1886 + 4631 + 1695 + 4411 - 769

SOLUTION: 6308

PROBLEM: 7903 + 4540 - 8329 - 3078

SOLUTION:
14770