Writing poems during the contest time? Is he a backbencher?

Правка en1, от RainFall, 2021-05-19 18:50:12

I thought rainboy is just a guy who like to solve hard problem in contest time. But there is more. Found something interesting in his submission. I'm curious about the poem. Looking for explanation XD.

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  Rev. Язык Кто Когда Δ Комментарий
en2 Английский RainFall 2021-05-20 08:31:43 16
en1 Английский RainFall 2021-05-19 18:50:12 348 Initial revision (published)