Hello Codeforces!
On October 27, 17:05 MSK Educational Codeforces Round 31 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.
The round will be unrated for all users and will be held on extented ACM ICPC rules. After the end of the contest you will have one day to hack any solution you want. You will have access to copy any solution and test it locally.
You will be given 6 problems and 2 hours to solve them.
The problems were prepared by Ivan BledDest Androsov, Vladimir vovuh Petrov, Alexey Perforator Ripinen, Mike MikeMirzayanov Mirzayanov and me.
Good luck to all participants!
Congratulations to the winners:
| Rank | Competitor | Problems Solved | Penalty |
|---|---|---|---|
| 1 | biGinNer | 6 | 175 |
| 2 | natsugiri | 6 | 228 |
| 3 | palayutm | 6 | 283 |
| 4 | LHiC | 6 | 293 |
| 5 | eddy1021 | 6 | 295 |
Congratulations to the best hackers:
| Rank | Competitor | Hack Count |
|---|---|---|
| 1 | No_One_Loves_The_Weak | 18 |
| 2 | halyavin | 22:-10 |
| 3 | dreamoon_love_AA | 33:-35 |
| 4 | kuko- | 15 |
| 5 | STommydx | 12:-1 |
259 successful hacks and 368 unsuccessful hacks were made in total!
And finally people who were the first to solve each problem:
| Problem | Competitor | Penalty |
|---|---|---|
| A | eddy1021 | 0:01 |
| B | eddy1021 | 0:02 |
| C | vintage_Vlad_Makeev | 0:06 |
| D | cyand1317 | 0:18 |
| E | eddy1021 | 0:36 |
| F | zscoder | 0:35 |
