Hi Everyone,

I would like to ask all of you about the cause for this kind of strange behaviour of my code with respect to little change.

I have made submission to the following problem Rebuild (January Clash Contest). I have made the following submission at first link here and got following result.

I thought and checked for the possible reason of segmentation fault but could n't find one as everything was correct according to me then suddenly i made one small change and woohhhh amazingly it worked and the change was ..

I am still not convinced with whatever happened to me. After all what possible difference an "equal to" can cause in this case. Please explain ?