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: 2537 - 3199 + 5925 + 8172 + 3564 + 8810

SOLUTION: -20735

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

SOLUTION: 1115

PROBLEM: 2901 - 7312 + 3664 - 5954 - 4372 - 9135 - 6873 + 2372

SOLUTION:
30511