How i can use bitmasking technique to solve spoj XMAX problem, I am a beginner its hard to understand bit masking… Can anyone help me to understand bit masking well and how i can implement that in XMAX problem

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That problem is extremely similar to current contest problem XORSUB, so we should probably refrain from discussing a solution to that problem.

However we can discuss the bitmasking technique in general. Read about it here and ask about any specific doubts if they arise.

I don’t think, you can solve XMAX using bitmasking, the constraints are too big for bitmasking to be useful.

Please see the following link for approach to solve the problem http://math.stackexchange.com/questions/48682/maximization-with-xor-operator

I’m just confused how to use this technique to get sub arrays. Thanks sir… I will try to find out the possible solution thanks sir…

glad to help