Here's a screenshot from the 1point3acres forums:
What does this mean? Is it a transliteration from English?
You can also find phrases like:
on the site.
Edit: they seem to be "interview question types"
Uber ATG failed interview:
startup Element, Inc. failed interview:
利口散灵思->这个不是算每个点到(0,0) square 的 sum 相减么。。还有啥最优解？莫非是Segment tree 或者 binary indexed tree?