With only a handful of clues to answer, the daily puzzle doubles as a speed-running test for many who play it.
What's special about the Shark UV Reveal?It's in the name: The Shark UV Reveal uses a UV light to detect stains on the floor that we wouldn't see with a casual glance down. That could be anything from those super-faint water stains on the bathroom floor, to sticky residue from a kitchen spill you thought you wiped up, to invisible droplets of dried pet pee. If there were ever a robot vacuum for Dexter Morgan, it would be this one.
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Uppercase[S: Literal[str]]: uppercase a string literal
Steptron 训练框架：https://github.com/stepfun-ai/SteptronOss
### add SHA256(all_messages) to seed