_nathan_drake_'s blog

By _nathan_drake_, history, 13 months ago, In English,

Can anyone provide a better editorial for this question . https://www.codechef.com/LTIME01/problems/GRTRIP

I have been trying to understand it for a week now, but I fail to understand how shortest path tree is being constructed and how it is compared with the dfs done by chef in his own algorithm.

Please help

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