Wow. What a clickbait-y title. But that got your attention 
I haven’t properly said it before, but Thank you Zew and Aicrowd for organizing this competition. Thank you, fellow participants. I learn lots of new stuff from this, especially from the top LB solutions & other participants’ notebooks. I think I already got in my mind the best practice when facing this kind of problem in my work in the near future (sooner or later I think I’ll be facing this too, and labeling will be more expensive because of engineer/scientist level labeler needed for the data).
Hope you guys are always in good health.
Cheers