Tommyr7's blog

By Tommyr7, history, 8 months ago, In English,

Hi, all!

This is not Tommyr7, but the impostor behind the round again (guess who I am? :P). The statements are written by me. Thank you, everyone, and hope you've all enjoyed the round!

Any feedback on problems and tutorials are welcome — we look forward to doing even better in the future!

Here are some of the detailed tutorials!

Tutorials

934A - A Compatible Pair

Author quailty / Preparation quailty / Tutorial quailty

Tutorial
Solution (quailty)

934B - A Prosperous Lot

Author Tommyr7 / Preparation cyand1317 / Tutorial cyand1317

Tutorial
Solution (Tommyr7)

933A - A Twisty Movement

Author visitWorld / Preparation visitWorld / Tutorial visitWorld

Tutorial
Solution (visitWorld)

933B - A Determined Cleanup

Author Tommyr7 / Preparation cyand1317 / Tutorial cyand1317

Tutorial
Solution (Tommyr7)

933C - A Colourful Prospect

Author quailty / Preparation quailty / Tutorial quailty

Tutorial
Solution (quailty)
Solution (cyand1317)

933D - A Creative Cutout

Author skywalkert / Preparation skywalkert / Tutorial skywalkert

Tutorial
Solution (skywalkert)
Solution (demon1999)

933E - A Preponderant Reunion

Author skywalkert / Preparation skywalkert / Tutorial skywalkert

Tutorial
Solution (skywalkert)

Thank you everyone!

Happy Valentine's Day and happy Lunar New Year!

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By Tommyr7, history, 8 months ago, In English,

Hi, Codeforces! Happy Valentine's Day. And happy Lunar New Year!

I'm quite honored to invite you to Codeforces Round #462 which will take place at 15:05 MSK on 14 Feb and last for two hours.

The authors are quailty, skywalkert, visitWorld and me. This is our second round here.

The round couldn't have been realized without efforts of KAN and our testers: cyand1317, demon1999. Thanks for your help to the contest. Also, thank MikeMirzayanov for the fantastic Codeforces and Polygon platforms.

The contest will consist of five problems and it is rated for both division contestants.

The background of problems will be about Lunar New Year. (Yes... Not Valentine's Day...)

Hope to see you in the contest! Good luck and have fun, wish you a high rating!

We suggest that those who already have Valentine's Day plans should not participate... You can always upsolve a contest, but there is only one Valentine's Day ;)

The scoring distribution will be announced later.

See you in the contest!

UPD: The scoring distribution is:

div1: 500 — 750 — 1500 — 2250 — 2500

div2: 500 — 1000 — 1500 — 2000 — 2500

UPD2: Congratulations to the winners!

Division 1 :

  1. Um_nik (solved all problems!)
  2. Golovanov399
  3. geniucos
  4. fateice
  5. kriii

Division 2 :

  1. aabdelzaher
  2. WNG
  3. ZYF1023
  4. Kita_The_Dragon
  5. _Kuroni_

UPD3: The editorial is available now!

Thank you everyone!

Happy Valentine's Day and happy Lunar New Year!

See you next time!

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By Tommyr7, history, 12 months ago, In English,

Hi, all!

This is not Tommyr7, but the impostor behind the round (guess who I am? :P). The statements are written by me. The characters in the round feature, again, the Monogatari anime series, and to be more specific, Nisemonogatari: Fake Tale. The statements involve stories with fake things and oddities, but as per tradition, contain no spoilers. Thank you, everyone, and hope you've all enjoyed the round!

On a side note, special kudos to the best impostors of the round (except me, lol)!

Any feedback on problems and tutorials are welcome -- we look forward to doing even better in the future!

Here are hints for all problems and detailed tutorials!


Hints

Problem A
Problem B
Problem C
Problem D
Problem E

Tutorials

869A - The Artful Expedient

Author Tommyr7, cyand1317 / Preparation Tommyr7, cyand1317 / Tutorial cyand1317

Tutorial
Solution 1 (Tommyr7)
Solution 2 (cyand1317)

869B - The Eternal Immortality

Author Tommyr7 / Preparation Tommyr7 / Tutorial cyand1317

Tutorial
Model solution (Tommyr7)

869C - The Intriguing Obsession

Author Tommyr7 / Preparation Tommyr7 / Tutorial Tommyr7

Tutorial
Model solution (Tommyr7)

869D - The Overdosing Ubiquity

Author quailty / Preparation quailty / Tutorial quailty

Tutorial
Model solution (quailty)

869E - The Untended Antiquity

Author Tommyr7 / Preparation Tommyr7, cyand1317, visitWorld / Tutorial cyand1317

Tutorial
Solution 1 (visitWorld)
Solution 2 (Tommyr7)

Tommyr7: I do hope you all enjoyed yourselves during the contest. See you next time!

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By Tommyr7, history, 12 months ago, In English,

Hi, Codeforces!

I'm quite excited to invite you to Codeforces Round #439 (Div. 2) which takes place at 16:35 MSK on 6 October and lasts for two hours.

One of the five problems is created by quailty, and the others are created by me. This is our first round here.

The round couldn't have been realized without efforts of KAN and gritukan. Besides, I also want to say thanks to our testers: cyand1317, visitWorld, Nisiyama_Suzune, cdkrot and gainullin.ildar. Thanks for your help to the contest. Also, thanks to MikeMirzayanov with the fantastic Codeforces and Polygon platforms.

The contest will consist of five problems and it is rated for Div. 2 contestants. The same as before, Div. 1 contestants can take part out of competition.

The problems will feature... Well, let's wait and see for another time ;) As per Codeforces tradition, moderate length text and no spoilers about the actual plot.

I hope you can have fun during the contest. Good luck and have fun, wish you high rating!

The scoring distribution will be announced later.

See you tomorrow!

UPD1 : The scoring distribution is 500-1000-1500-2250-2500.

UPD2 : The contest is over. The editorial is available.

UPD3 : Congratulations to top five coders!

Division 2 :

  1. 1heart2plans (solved all problems!)
  2. fatice
  3. LuckyPants
  4. xza
  5. T404

Division 1 + Division 2 :

  1. 1heart2plans (solved all problems!)
  2. unused
  3. fatice
  4. nuip
  5. chemthan

Have fun! See you next time! (Let's wait and see...)

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