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许多公司一看搞 ICPC 的人那么牛逼，于是模仿 ICPC 和 OI 的风格搞在线笔试和面试。 然而，画虎不成反类犬，搞出了各种奇葩的毒瘤题目。

Time complexity problem
Another stupid problem can lead to some thoughts.
Last updated on Sep 13, 2019 4 min read
Analysis of Undefined Behaviors from an Examination
Even a stupid problem can lead to some thoughts.
Last updated on Oct 5, 2020 10 min read