Hi!! This question is a regular at many programming contests. The solution is a very elegant one(in my opinion). http://mathworld.wolfram.com/LightsOutPuzzle.html
regards, Pradeep --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to algogeeks@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/algogeeks -~----------~----~----~----~------~----~------~--~---