macaquedev's blog

The worst div4 in history?
By macaquedev, history, 4 hours ago, In English

So, I joined today's round with pretty high expectations, because I enjoy trying to speedsolve div3's and 4's However, the problems today were truly awful and rife with issues.

Let's start with Problem A. It's probably the easiest problem ever seen on this site. As soon as the contest began, submissions poured in by the thousands, clogging up the queue. It was chaos. I ended up submitting C and D before even finding out if my B submission was correct.

Speaking of Problem B, it was a nightmare of unclear instructions, leading to a flood of Wrong Answer submissions from thousands of people. "For a better understanding, please check the notes section." Seriously? That’s just pathetic, and so lazy...

Surprisingly, Problem C was decent, but Problem D? An absolute disaster! The weak pretests allowed a flood of grey Python/C# users to fail miserably when my braindead brute-force hack of:

1
?????????????????????????????...
abcdefghijklmnopqrstuvwxyzabc...

caused a whole page of submissions to topple like dominoes. And don’t get me started on the terminology — it's "contiguous subsequence," not "continuous." Google could have corrected you, for crying out loud!

Then there was E. Another nightmare with weak pretests and ridiculous O(nt) solutions passing (and of course, the legendary stils somehow using some kind of black magic to withstand about 300 hacks of a nonsense O(nt) solution, including about twenty from my friend myst-6). Of course, it is even in the contest creation guidelines to ensure that "stupid bruteforce solutions" don't pass, but I guess the rules maybe didn't apply to today's contest? Lord knows.

And just when I thought a good problem came up, one I actually rather enjoyed solving, I get a message straight after the contest from a certain AG-88301 telling me that GitHub Copilot solved this problem with no input from him???? I thought it was common sense to run problem statements through generative AI to make sure they aren't instantly solved, but I guess not for today's problem writers.

And then after all this, we're hit with just about the most standard ternary search question in existence? It's not even funny at this point, it's just embarrassing.

Rant over. I hope those who deserved rating got it. In a perfect world, low-quality contests like this wouldn’t happen, but in our flawed reality, it’s just another day.

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4 hours ago, # |
  Vote: I like it +12 Vote: I do not like it

It's just a Div4 contest man, and we didn't have serious problems. Relax.

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4 hours ago, # |
  Vote: I like it -9 Vote: I do not like it

i dont agree, you are just stupid lol.

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4 hours ago, # |
← Rev. 2   Vote: I like it +28 Vote: I do not like it

I don't have any strong opinions on the round (mostly because I lied down sick and submitted to G1/2 from my phone), but I love how passionate you are in your writing! Lmao

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4 hours ago, # |
  Vote: I like it +13 Vote: I do not like it

Yeah, after reading this post, it really seems to be a weird Div. 4. Brute force passed on task E, binary search on G1 and ternary on G2. However, I think we all can recover from this, and this is just one occasion of a lower quality contest.

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4 hours ago, # |
  Vote: I like it +28 Vote: I do not like it

All div 4 (and div 3 with easy first problems) contests clog up the queue. It's not the authors fault for setting the easiest A in coding history. They're required to.

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3 hours ago, # |
  Vote: I like it +14 Vote: I do not like it

I'll be honest, when I opened the statement of G1 and saw that it was literally just binary search I thought it was a joke. But I realised that it's a div 4, it doesn't have to be particularly difficult. The queue is annoying of course but I doubt there's much that can be done about it.

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    3 hours ago, # ^ |
      Vote: I like it +8 Vote: I do not like it

    just beg telegram for more money and more servers I guess? sounds fairly trivial to me

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3 hours ago, # |
  Vote: I like it +12 Vote: I do not like it

skill issue mate

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3 hours ago, # |
  Vote: I like it +8 Vote: I do not like it

I don't think you've seen a lot of Div 4 As, because today's was certainly not as easy as this.

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3 hours ago, # |
  Vote: I like it +6 Vote: I do not like it

I've made over 200 attempts to hack the O(nt) solutions of E. Only 5 were successful...

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    115 minutes ago, # ^ |
    ← Rev. 2   Vote: I like it +6 Vote: I do not like it

    What test case did you use? I used:

    print(10000)
for i in range(50):
    for j in range(100):
        print(1, 200000-j)
    for j in range(100, 0, -1):
        print(1, 200000-j)

    and it was never successful...

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97 minutes ago, # |
  Vote: I like it +1 Vote: I do not like it

oh no, a super easy 4A, how could they!

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95 minutes ago, # |
  Vote: I like it +1 Vote: I do not like it

Just sharing my experience ,As It was my first unrated participation in Div4, For Question F, I Googled NCR formula with modular Arithmetic and soon got one in GFG, then, I just copy pasted it blindly....xD.

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    55 minutes ago, # ^ |
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    it's worth having a template for modular arithmetic, it comes up literally all the time

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85 minutes ago, # |
  Vote: I like it +1 Vote: I do not like it

This round was basically an educational round with binary search, ternary search, choose with mod. Those can all be easily looked up on Google. With the 3 hardest problems being classic and can be easily searched up, ratings could be impacted on whether or not you know these things that I listed. I honestly don't think this should happen, but we'll see how future contests go.

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66 minutes ago, # |
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queue was terrible I agree you can even see how it affected me (took 10 min on G1 to get Idleness limit exceeded then another 10 min to get wrong on test 1) however that's on mike not the Authors, B was bad other than that everything is good.

easy problems? its div 4.

and you should at least know what's the time complexity of your code and how slow it is before submitting.

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50 minutes ago, # |
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so you're mad...that you didn't read the problem statement for B?

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    44 minutes ago, # ^ |
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    I'd just like to remind you that one of us got AK this contest, and the other did not... I wonder which one of us it was :)

    oh and also, it would be nice if you read the rest of my blog before making such a nonsensical comment.

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      7 minutes ago, # ^ |
        Vote: I like it 0 Vote: I do not like it

      one of us started ranting online about how terrible the round was...and for the record i'm really happy with my performance.

      i'm not even trying to be mean here, for the sake of your blood pressure, you should go do a relaxing activity for 30-45 minutes (long walk, meditation, affirmations, etc).

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