Maybe the heap memory is not enough, apart from crazy kind of work, I cannot recall a thing. Finally, agreed to accept something which could take forever to solve. Would this be the same in my case? If something cannot be solved, should I leave it unsolved and accept it as it is?

If you know, me, you know I won't. I understand, sometime, I may not have enough time, energy and determination to solve things that complicated enough not be abled to solve in first place. This is also my suggestion to my dear friend, if tired, don't think; if sad, eat sweet. Sometime, even you know you should not do this, you have to let it be until a time you have reserved enough energy to break it down.

I understand, but I am not sure whether I know how to do. Maybe Oracle can help, maybe I should not tense myself. Looking forward to this musical chair, looking forward to a relaxing day. Wish you are well.