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Need help with the poblem- HELP on spoj
How can I approach this problem using optimal binary search tree?
Here is what I've been trying so far: 1) finding heights of each node 2) using those heights as frequencies and creating a OBST 3) printing the depth of each node on that OBST as result.
This is giving me WA. I can't find any other way. So I'd really appreciate any help.
Thank you.
