Look at my code and tell me something

Revision en1, by phyzzmat, 2019-10-09 23:10:39

This is my solution for problem 1234D.

The code get AC, but I have one question:

My question

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  Rev. Lang. By When Δ Comment
en3 English phyzzmat 2019-10-10 02:53:23 30
en2 English phyzzmat 2019-10-10 02:47:29 210 (published)
en1 English phyzzmat 2019-10-09 23:10:39 644 Initial revision (saved to drafts)