Add lifthrasiir codec at 5,707,152 bytes.#24
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agavra merged 4 commits intoagavra:mainfrom Feb 13, 2026
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This is not strictly necessary because the submission expects the input to be sorted, but small tweaks can make it work with unsorted inputs as well. This commit improves encoding for those cases (only).
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Confirmed in CI: Very nicely done, impressed that it works without |
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At the moment, this is the best codec that doesn't use any non-zstd entropy coder (which was my own, intentional constraint). It also somehow beats the current winner when zstd is replaced with lpaq1, but that's no fun ;-)
Disclaimer: Almost entirely written with GLM-4.7 and Claude Code. Compression codecs are famously hard to get right, but modern coding agents make them much more doable!