Educational Codeforces Round 60 [Rated for Div. 2]

Revision en6, by pikmike, 2019-02-19 20:22:23

Hello Codeforces!

On Feb/18/2019 18:40 (Moscow time) Educational Codeforces Round 60 (Rated for Div. 2) will start.

Series of Educational Rounds continue being held as Harbour.Space University initiative! You can read the details about the cooperation between Harbour.Space University and Codeforces in the blog post.

This round will be rated for the participants with rating lower than 2100. It will be held on extented ICPC rules. The penalty for each incorrect submission until the submission with a full solution is 10 minutes. After the end of the contest you will have 12 hours to hack any solution you want. You will have access to copy any solution and test it locally.

You will be given 7 problems and 2 hours to solve them.

The problems were invented and prepared by Roman Roms Glazov, Adilbek adedalic Dalabaev, Vladimir Vovuh Petrov, Ivan BledDest Androsov, Abizer Reziba Lokhandwala and me.

Good luck to all participants!

Our friends at Harbour.Space also have a message for you:

Attention tech specialists!

Harbour.Space Barcelona is proud to announce a collaboration with one of our industrial partners to offer a fully funded scholarship for our one year Master’s in Data Science Programme at HSU Barcelona.

The Scholarship includes:

  • Full coverage of the Programme’s tuition fee (€23,000 value)
  • 3 hours of study a day at Harbour.Space University
  • 4 hours of internship a day with one of our industrial partners
  • €12,000 euros a year (living allowance)

Our data science programme will feature super star teachers like Mike Mirzayanov (Advanced Algorithms and Data Structures), Alexey Dral (Big Data: Map Reduce, Spark, BigTable/HBase) and Alex Dainiak (Discrete Optimisation), plus many more.

Harbour.Space is unique because:

  1. We don’t play by the rules. We bring practicing professionals, not only academic teachers, who come teach for intense, 3 week modules. HSU students are encouraged to experiment, fail, and try again, until they succeed.

  2. We are your home. Harbour.Space is a community of over 40 nationalities, and we're still growing.

  3. We provide an experience. Harbour.Space University is located in Barcelona, one of the most vibrant cities of our time.

If you are interested in the scholarship, fill out the form below and we will contact you about the next steps.


Congratulations to the winners:

Rank Competitor Problems Solved Penalty
1 kmjp 7 258
2 dreamoon_love_AA 7 269
3 BigBag 7 376
4 Benq 7 573
5 step_by_step 6 178

Congratulations to the best hackers:

Rank Competitor Hack Count
1 FST-OIer 65:-8
2 stefdasca 23:-5
3 Orion 11
4 prohor.b 10
5 MattG 9
344 successful hacks and 480 unsuccessful hacks were made in total!

And finally people who were the first to solve each problem:

Problem Competitor Penalty
A tataky 0:01
B KieranHorgan 0:03
C step_by_step 0:11
D Gloid 0:11
E Benq 0:10
F TripleM5da 0:34
G tfg 0:16

UPD: The editorial is out


  Rev. Lang. By When Δ Comment
en6 English pikmike 2019-02-19 20:22:23 72
ru6 Russian pikmike 2019-02-19 20:22:00 70
en5 English pikmike 2019-02-19 20:20:33 2529
ru5 Russian pikmike 2019-02-19 20:20:20 2505
en4 English pikmike 2019-02-18 13:01:47 45 Tiny change: '] Androsov and me.\n' -> '] Androsov, Abizer [user:Reziba] Lokhandwala and me.\n'
ru4 Russian pikmike 2019-02-18 13:01:36 49
en3 English pikmike 2019-02-18 11:45:25 4 Tiny change: ' extented ACM ICPC rule' -> ' extented ICPC rule'
ru3 Russian pikmike 2019-02-18 11:45:16 4 Мелкая правка: ' правилам ACM ICPC. Штр' -> ' правилам ICPC. Штр'
en2 English pikmike 2019-02-17 19:03:02 1688
ru2 Russian pikmike 2019-02-17 19:02:31 1680
en1 English pikmike 2019-02-17 10:58:27 1124 Initial revision for English translation
ru1 Russian pikmike 2019-02-17 10:57:53 1251 Первая редакция (опубликовано)