How to solve SPOJ QTREE4 by HLD?

Правка en1, от rhezo, 2016-09-21 11:28:47

I was reading anudeep2011's blog.

He mentioned 2-3 lines down below to solve QTREE4 using HLD. I didn't understand it, can some explain it to me, please?

Here is the link to the problem.

История

 
 
 
 
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  Rev. Язык Кто Когда Δ Комментарий
en4 Английский rhezo 2016-09-24 13:40:09 14 Tiny change: 'minimum). ' -> 'minimum). \n\nAnyone? :|'
en3 Английский rhezo 2016-09-21 15:26:55 197
en2 Английский rhezo 2016-09-21 11:32:25 117
en1 Английский rhezo 2016-09-21 11:28:47 343 Initial revision (published)