atcoder_official's blog

AtCoder Beginner Contest 462 Announcement
By atcoder_official, history, 3 months ago, In English

We will hold CodeQUEEN 2026 -qual- (AtCoder Beginner Contest 462).

We are looking forward to your participation!

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3 months ago, hide # |
 
Vote: I like it -18 Vote: I do not like it

The name is CodeQUEEN. So is it for females only?

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3 months ago, hide # |
 
Vote: I like it +4 Vote: I do not like it

I've made a quick web tool to help everyone check problem scores and estimated difficulties at a glance, which might be useful for your upsolving:
AtCoder Statistics
Any feedback is welcome. Hope it helps with your practice!

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3 months ago, hide # |
 
Vote: I like it +1 Vote: I do not like it

luck you

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3 months ago, hide # |
 
Vote: I like it 0 Vote: I do not like it

I want to win

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3 months ago, hide # |
 
Vote: I like it 0 Vote: I do not like it

AtCoder666

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

problem G is similar to 1799G. I solved it yesterday lol.

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    3 months ago, hide # ^ |
    ← Rev. 2  
    Vote: I like it +2 Vote: I do not like it

    I found this G to be easier than one in other AtCoder rounds, can be considered north of usual ABC Problem F. Even the points are lower. Anyways, lucky you!!

    Surprisingly, problem F was harder to me. I found it better.

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3 months ago, hide # |
 
Vote: I like it 0 Vote: I do not like it

F was great

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3 months ago, hide # |
 
Vote: I like it -10 Vote: I do not like it

I JUST WASTED AN HOUR BEING MISLED BY PROBLEM D!!! I FORGOT THAT TIME SHOULD ALSO BE INCLUDED IN WHAT I'M SOLVING!!!

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3 months ago, hide # |
 
Vote: I like it 0 Vote: I do not like it

My first time to solve E.Quite easy.

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3 months ago, hide # |
 
Vote: I like it 0 Vote: I do not like it

can anyone tell me what caused WA (C — Not Covered Points)

Code
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    3 months ago, hide # ^ |
    ← Rev. 2  
    Vote: I like it 0 Vote: I do not like it

    It should be if (y <= mn) instead of if (y < mn), because the boundary is excluded.

    (UPD) it's not a problem

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      3 months ago, hide # ^ |
      ← Rev. 3  
      Vote: I like it +18 Vote: I do not like it

      I don't think that is the cause of WA. Assign the value to minY post sorting; or keep it as INF or N + 1 and sweep through all points after sorting.

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        3 months ago, hide # ^ |
         
        Vote: I like it 0 Vote: I do not like it

        Yeah, you're right, y is permutation, so comparison type doesn't matter.

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      3 months ago, hide # ^ |
       
      Vote: I like it 0 Vote: I do not like it

      Thank u so much for your help. Anyways I made these modifications and then got AC. I wonder how do those modifications make any difference?!

      Modifications
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        3 months ago, hide # ^ |
         
        Vote: I like it 0 Vote: I do not like it

        The only problem was that you set mn before sorting, so it was just an ordinary y. It should be enough to swap int mn=vp[0].second; and sort(all(vp)); lines in the first code.

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3 months ago, hide # |
 
Vote: I like it 0 Vote: I do not like it

you can practice topic wise and difficulty wise sorting on this Atcoder Tags to get better in future.

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