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.

[EX Q]: 42 + 6517 - 146 + 304 - 4759 + 148 - 3822
[EX A]: 1800

[EX Q]: 2591 - 5867 - 9565
[EX A]: 18023

[EX Q]: 4224 - 4013 + 8299 - 8026 - 4816 - 7018
[EX A]:
19798