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.

[Q]: 5299 - 8791 + 6861
[A]: 7229


[Q]: 8247 - 6987 - 8915 - 9962
[A]: 34111


[Q]: 2923 + 45 + 7558 - 4523
[A]:
-157