Samples ruined a great task

Правка en1, от brezhart, 2021-08-26 23:13:44

I feel really disappointed after todays Codeforces Round 741 (Div. 2) because of very strong samples in 1562D1 - Двести двадцать один (простая версия).

  • the fact that answer is always <= 2 is not so obvious, but samples made it clear.

  • samples also made it clear that answer is depends on parity of the sign-variable sum

I know a lot of people (including myself) who did not prove it at all. I think problem solving is not about just getting Accepted by staring at samples, but analysing problem and come up with ideas. I spent more time analysing problem A and I don't think it is right

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en1 Английский brezhart 2021-08-26 23:13:44 648 Initial revision (published)