LilyWhite's blog

Expected Length of Segment
By LilyWhite, history, 5 years ago, In English

Given a segment of length $$$1$$$, randomly pick two points $$$A$$$ and $$$B$$$, you are tasked to find the expected length of segment $$$AB$$$.

For Chinese readers, Chinese statement is here:

Chinese Statement

Someone says that it is related to the theoretical proof of Chtholly Tree, but I simply cannot understand why...

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5 years ago, # |
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The answer is 1/3. Read this for more info.

I don't know what a Chtholly Tree is so i can't comment on that.

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5 years ago, # |
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see this problem https://codeforces.net/problemset/problem/1153/F

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