Hi Everyone,↵
↵
<p>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.</p>↵
<p>↵
I have made submission to the following problem <a href="https://www.hackerearth.com/january-clash-16/algorithm/rebuild/description/#c45102"> Rebuild (January Clash Contest)</a>. I have made the following submission at first <a href="https://www.hackerearth.com/january-clash-16/algorithm/rebuild/description/#c45102">link here</a> and got following result.↵
</p>↵
<p>↵
![ ](<img src="https://s3.amazonaws.com/hr-challenge-images/3194/1452962788-dac18a68ab-rebuild1.JPG" title="rebuild1.JPG" />↵
)↵
</p>↵
<p>↵
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 ..↵
</p>↵
<p>↵
![ ](<img src="https://s3.amazonaws.com/hr-challenge-images/3194/1452963067-9d59553260-image3.JPG" title="image3.JPG" />)↵
</p>↵
<p>↵
![ ](<img src="https://s3.amazonaws.com/hr-challenge-images/3194/1452963097-4d397d5cff-rebuild2.JPG" title="rebuild2.JPG" />) ↵
</p>↵
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<p> I am still not convinced with whatever happened to me. After all what possible differencethat an "equal to" can cause in this case. Please explain ? </p>
↵
<p>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.</p>↵
<p>↵
I have made submission to the following problem <a href="https://www.hackerearth.com/january-clash-16/algorithm/rebuild/description/#c45102"> Rebuild (January Clash Contest)</a>. I have made the following submission at first <a href="https://www.hackerearth.com/january-clash-16/algorithm/rebuild/description/#c45102">link here</a> and got following result.↵
</p>↵
<p>↵
<p>↵
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 ..↵
</p>↵
<p>↵
</p>↵
<p>↵
</p>↵
↵
<p> I am still not convinced with whatever happened to me. After all what possible difference
