Блог пользователя TheScrasse

Автор TheScrasse, история, 5 месяцев назад, По-английски

This problem was going to be used in Pinely round...

Problem

but it has exactly the same solution as 1913D - Схлопывание массива.

A while ago I invented another problem, but my coordinator rejected it because the authors of Hello 2024 (whose coordinator is the same) had just invented the same exact problem!

:(

Теги sad
  • Проголосовать: нравится
  • +329
  • Проголосовать: не нравится

»
5 месяцев назад, # |
  Проголосовать: нравится +162 Проголосовать: не нравится

The positive side of this is:

Spoiler
»
5 месяцев назад, # |
  Проголосовать: нравится +110 Проголосовать: не нравится

I've just found out (from the comment section of the last Educational round) that my problem is identical to TKOC 2021/4, which I had already solved. Now I feel less sad. (If 1913D - Array Collapse didn't appear, in my round there would have been a problem which already appeared previously.)

Actually, when I invented my problem, I thought I had already seen something similar on the TLX website, but I convinced myself the "similar problem" was this problem, which is much harder, and I missed that I had actually seen an identical problem.

  • »
    »
    5 месяцев назад, # ^ |
      Проголосовать: нравится 0 Проголосовать: не нравится

    There are a lot of online problems, so inventing new problems without duplication is very hard for setter

  • »
    »
    5 месяцев назад, # ^ |
      Проголосовать: нравится +23 Проголосовать: не нравится

    It's ok bro, it happens even in ICPC World Finals. You can't know all problems ever invented.

»
5 месяцев назад, # |
Rev. 2   Проголосовать: нравится -21 Проголосовать: не нравится


»
5 месяцев назад, # |
  Проголосовать: нравится +10 Проголосовать: не нравится

The fact you don't reveal the second problem means that there won't be any replacements in Hello 2023. I wonder, whether you are allowed to participate in the round :D. Most likely, you are eligible to take part in the contest, but were persuaded not to use your advantage of knowing a problem, right?

»
5 месяцев назад, # |
  Проголосовать: нравится -16 Проголосовать: не нравится

Invent original problems based on real life or games. Pure math problems can coincide with much higher probability.