atcoder_official's blog

AtCoder Beginner Contest 313 Announcement
By atcoder_official, history, 16 months ago, In English

We will hold AtCoder Beginner Contest 313.

The point values will be 100-300-400-550-600-625-625-650.

Since this contest is used as a qualification round for a local onsite contest, the problems are a bit different from usual ABCs. The style of the problems is a bit closer to ARCs, and the problems are a bit harder. Please refer to previous contests prepared in a similar manner.

We are looking forward to your participation!

  • Vote: I like it
  • +79
  • Vote: I do not like it

Comments Comments (19)
| Write comment?
»
16 months ago, # |
  Vote: I like it +41 Vote: I do not like it

Never seen point values being so odd.

→ Reply
»
16 months ago, # |
  Vote: I like it +11 Vote: I do not like it

The problems are "a bit" harder.

→ Reply
  • »
    »
    16 months ago, # ^ |
      Vote: I like it 0 Vote: I do not like it

    Update: Only solved ABCDE during the contest. It's really difficult!

    → Reply
»
16 months ago, # |
  Vote: I like it 0 Vote: I do not like it

No god please no

I only solved AB

My rating will go down rapidly

→ Reply
»
16 months ago, # |
← Rev. 2   Vote: I like it +27 Vote: I do not like it

G : https://atcoder.jp/contests/abc313/submissions/44302729 O(maxA) pass

→ Reply
»
16 months ago, # |
  Vote: I like it 0 Vote: I do not like it

Sorry to inform that C == this. btw i got my penalty cuz my sol doesn't have enough array size...

→ Reply
»
16 months ago, # |
  Vote: I like it 0 Vote: I do not like it

I only solved ABC My rating will go down rapidly

→ Reply
»
16 months ago, # |
  Vote: I like it +10 Vote: I do not like it

Today's difficulty level of the problems I could solve According to me A < B < C < E < D

D was the most thinking I had to do among them, rest were pretty straightforward.

→ Reply
»
16 months ago, # |
← Rev. 3   Vote: I like it 0 Vote: I do not like it

Is there any way to check a specific test case at Atcoder?

My submission for problem D fails at 1 test case out of the 29 test cases, and I'm not able to pinpoint where the error could be.

→ Reply
  • »
    »
    16 months ago, # ^ |
      Vote: I like it 0 Vote: I do not like it

    happened to me too, i was able to find a counter tho

    n = 6, k = 3, a = [1, 0, 1, 1, 0, 1]

    Might work for you

    → Reply
    • »
      »
      »
      16 months ago, # ^ |
        Vote: I like it 0 Vote: I do not like it

      Nah, unfortunately, even this tc works for my code.

      → Reply
    • »
      »
      »
      16 months ago, # ^ |
        Vote: I like it 0 Vote: I do not like it

      bro did u use gauss elimination?

      i know why i got wa*1 now, cuz this testcase will lead to multiple solutions.

      → Reply
»
16 months ago, # |
  Vote: I like it 0 Vote: I do not like it

I think problem D is very fantastic. May I ask the atcoder_official team, how do you come up with this problem and idea? Is there any related problem or similar idea that inspires you? I think to create such a problem is even harder than solving it.

→ Reply
»
16 months ago, # |
  Vote: I like it 0 Vote: I do not like it

I have passed all the ABCDE questions. Do any talented programmers tell me how to write F questions？

→ Reply