I just looked at the scoreboard of round 720 and was surprised by how a Div2 participant ([user:krasav4ik,2021-05-07]) was able to solve D in 13 minutes. Then I clicked on his submission for D and saw a very different style compared to his previous A, B, C submissions. Take a look at these submissions [submission:115581818], [submission:115571933]. I don't think they were written by the same person. Is this behavior considered as cheating?↵
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Update: [user:jt.cheng26_orz,2021-05-09] found this D submission is from [user:StickBuerak,2021-05-09]. I don't know why but they keep downvoting my every comment probably in order to hide it so no one can see.
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Update: [user:jt.cheng26_orz,2021-05-09] found this D submission is from [user:StickBuerak,2021-05-09]. I don't know why but they keep downvoting my every comment probably in order to hide it so no one can see.