prabowo's blog

Invitation to TOKI Regular Open Contest #7
By prabowo, history, 5 years ago, In English

Dear Codeforces community,

We're excited to invite you to TOKI Regular Open Contest (TROC) #7!

Key details:

  • Rated
  • Contest links: Div 1 and Div 2
  • Time: 1 September 2019, 13:05 UTC+7
  • Style: full feedback, 8-minute penalty per wrong submission
  • Scoring: You get the score assigned to the problem when you fully solve it
  • Writers: AMnu, YogayoG
  • Duration: 2 hours
  • Problems: 5 for every division
  • Allowed languages: C, C++11, Pascal, Java, Python 3

This is the first TROC round that uses two divisions system:

  • Users with rating less than 2000 or not yet rated should participate in Div 2
  • Users with rating at least 2000 should participate in Div 1

Please register to the contest, and we hope you will enjoy TROC #7!

UPD1: The contest is rescheduled to 1 September 2019, 13:05 UTC+7

UPD2: Scoring distribution:

  • Div 2: 100 — 200 — 300 — 550 — 700
  • Div 1: 200 — 400 — 500 — 850 — 900

UPD3: Contest is over! Our Top 5:

Div 1:

  1. wiwitrifai
  2. rais.fathin38
  3. faustaadp
  4. Pyqe
  5. rfpermen

Div 2:

  1. rapel
  2. Lucina
  3. ollpu
  4. jessenanwar
  5. vioalbert

Editorial will be available here (currently English is not fully available yet).

You can upsolve the problems here.

Thank you for participating and see you on the next contest!

  • Vote: I like it
  • +41
  • Vote: I do not like it

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5 years ago, # |
  Vote: I like it -8 Vote: I do not like it

Clashes with atcoder beginner contest

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5 years ago, # |
  Vote: I like it 0 Vote: I do not like it

Auto comment: topic has been updated by prabowo (previous revision, new revision, compare).

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5 years ago, # |
  Vote: I like it 0 Vote: I do not like it

Auto comment: topic has been updated by prabowo (previous revision, new revision, compare).

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5 years ago, # |
  Vote: I like it +6 Vote: I do not like it

Are you sure that tests for problem E are correct? I tried to assert whether the cities are indeed connected, and this gives RTE verdict (and without this assertion it gives WA).

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    5 years ago, # ^ |
      Vote: I like it +16 Vote: I do not like it

    We double checked the tests again, and the cities are already connected.

    Looks like your RTE is caused by another reason. Maybe because the array s that you used should have the size of N instead of 20

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      5 years ago, # ^ |
        Vote: I like it 0 Vote: I do not like it

      Oops, my bad, sorry about that. Now I really wonder why my solution is incorrect:) Is there something special about testcase 43? Also, is it possible to submit after the contest?

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        5 years ago, # ^ |
          Vote: I like it +8 Vote: I do not like it

        It is fine :) You can upsolve the problems here.

        Test 43 is when
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5 years ago, # |
  Vote: I like it +5 Vote: I do not like it

It would be great if next contests have later starting time (at least 2-3h), this time is pretty bad for Europe.

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    5 years ago, # ^ |
      Vote: I like it +3 Vote: I do not like it

    Yes, we will try to have a later starting time for the next contests, as it is better for most of the current contestants as well

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

when editorial will publish.... and how to solve problem E in div2..

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    5 years ago, # ^ |
      Vote: I like it +3 Vote: I do not like it

    Editorial for English is being written. For problem Div 2E, the optimal answer is to "cut" the edge of the "median" of the diameter (if diameter is even, you have two edges to check).

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