OpenPOTD Season 33 Q451 - My Solution

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  • Опубликовано: 18 окт 2024

Комментарии • 10

  • @maximevanderbeken4712
    @maximevanderbeken4712 2 месяца назад

    Great video ! I think you got a bit confused in the end, as i feel like the inequality should be the other way around. Let c verify the equation, then from what you have proven, Sum^2 >= c sum^3 (You wrote the reversed inequality) . so c

    • @maximevanderbeken4712
      @maximevanderbeken4712 2 месяца назад

      then to prove that c is exactly 2/9, it shouldn't be so hard

    • @Xerunox
      @Xerunox  2 месяца назад

      oh yep! i donht know how i didnt catch that thanks

  • @lgooch
    @lgooch 2 месяца назад +1

    How did you prove that such a construction achieves minimality?

    • @Xerunox
      @Xerunox  2 месяца назад

      i think the proof from this stems from the proposition about the fact that there are only n-1 pairs which create a sum of n, so the pairs which i created exhaust those minimal cases

    • @Xerunox
      @Xerunox  2 месяца назад

      past the 2nd proposition it was mostly just pray and hope what i said was true

  • @lolwhoami.
    @lolwhoami. 2 месяца назад

    epic cool and based :D

  • @crippert1753
    @crippert1753 2 месяца назад

    Sigma

  • @jucom756
    @jucom756 2 месяца назад

    I'm sorry to burst your bubble mate but the hard part is proving the minimal construction, evaluating that construction is not that hard since it is just a rational function that monotonically decreases.

    • @Xerunox
      @Xerunox  2 месяца назад

      thats true i guess, although harder questions are definitely a new area for me so ill get there eventually