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Fix typo with size estimation for segment tree (#1) #761

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merged 1 commit into from
Nov 28, 2021

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forsythe
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1+2+4+...2^ceil(log_2(n)) is less than 2^(ceil(log_2(n))+1)
E.g. n=5, left side is 1+2+4+8=15, and right side is 2^(3+1)=16

* Fix typo with size estimation for segment tree
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@jakobkogler jakobkogler left a comment

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Thanks. You're correct.
In fact we could write = 2^... - 1, which would be the exact sum. But it's fine also that way.

@jakobkogler jakobkogler merged commit 56e4b7d into cp-algorithms:master Nov 28, 2021
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