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atcoder_official's blog

AtCoder Regular Contest-- 229 Announcement
By atcoder_official, history, 2 months ago, In English

We will hold AtCoder Regular Contest-- 229.

We are looking forward to your participation!

  • Vote: I like it
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2 months ago, hide # |
 
Vote: I like it +10 Vote: I do not like it

This is my first ARC. I hope I can solve A.

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

I hope this will be fun

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

I cannot understand why ARC on Saturday, and ABC on Sunday.

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2 months ago, hide # |
 
Vote: I like it -21 Vote: I do not like it

Why is A so hard to solve???

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

54 min left

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2 months ago, hide # |
 
Vote: I like it +23 Vote: I do not like it

One of my submissions was counted twice (one, two). Do you have checks to prevent resubmitting a byte-for-byte identical code?

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    2 months ago, hide # ^ |
     
    Vote: I like it -20 Vote: I do not like it

    Submitting the same code twice is your problem, Atcoder may not help you check it.

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

      As far as I know, I only submitted once. Software glitches happen, there's no user-side way to do anything about that.

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        2 months ago, hide # ^ |
         
        Vote: I like it +8 Vote: I do not like it

        Oh that's my problem, I didn't know the whole story:( im sorry..

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

I solved A in 1 h 10 min!!! But I don't know how I passed!? In fact, THIS IS MY FIRST ARC!!! I'm so excited! awa

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

ABC time, ABC difficulty.

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

I think B and C are much more easier than A. A is so hard to imple :(

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

Game Theory D is hard :(

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

I have only solved the problem A.Why are you all say ARC--?

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2 months ago, hide # |
 
Vote: I like it -13 Vote: I do not like it

I solved B and C at respectively T+00:46:06 and T+01:30:39,but I didn't solve A.

after contest ended,I go to Luogu discussion forum,and know that it has something to do with inversion pairs.

All in all,it's my first ARC.Wish my rating can increase !!!

September is a symbol of new things in China and I prove this today.

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

I think D is fun?or guessing riddles……C is easy thanB mmm,Ionly solved AC 555555

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

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

out-of-order ARC

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

Pretty sure construction for B is supposed to be "add An*2^(n-1) to X1", not "add An to X1". For example: 8 4 1, the editorial construction gets [3, 2] which is clearly incorrect, but having the proposed one gets [6,2] which works.

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

worst problem solve order of all time. A -> D -> run out of time on B. genuinely might be trolling with this one. one of the exactly 9 people to do this while everyone is instead screaming at the triviality of C

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