→ About Contest
Andrew Stankevich — Gold and Silver Medalist of ACM-ICPC, associate professor in Saint Petersburg University ITMO, SPb NRU ITMO teams coach, that became ACM-ICPC World Champions for 5 times. His contests have been used in Summer and Winter Petrozavodsk Camps since 2003. The contests are considered to be among the most interesting and well-prepared contests used at this international training camp. Contests materials are distributed under Creative Commons 4.0 Attribution license.
→ Virtual participation
Virtual contest is a way to take part in past contest, as close as possible to participation on time. It is supported only ICPC mode for virtual contests.
If you've seen these problems, a virtual contest is not for you - solve these problems in the archive.
If you just want to solve some problem from a contest, a virtual contest is not for you - solve this problem in the archive.
Never use someone else's code, read the tutorials or communicate with other person during a virtual contest.
→ Practice?
Want to solve the contest problems after the official contest ends? Just register for practice and you will be able to submit solutions.
→ Status filter
→ Contest materials
Contest status
| # | When | Who | Problem | Lang | Verdict | Time | Memory |
|---|---|---|---|---|---|---|---|
| 372704882 | Apr/27/2026 15:37 | chenwz | I - Railroad Simulator | C++20 (GCC 13-64) | Accepted | 406 ms | 12500 KB |
| 372704468 | Apr/27/2026 15:33 | chenwz | D - Cyclic Index | C++20 (GCC 13-64) | Accepted | 124 ms | 100 KB |
| 372679543 | Apr/27/2026 10:18 | chenwz | D - Cyclic Index | C++20 (GCC 13-64) | Accepted | 92 ms | 100 KB |
| 372679510 | Apr/27/2026 10:17 | chenwz | D - Cyclic Index | C++20 (GCC 13-64) | Compilation error | 0 ms | 0 KB |
| 372679063 | Apr/27/2026 10:11 | chenwz | E - New Hierarchy | PyPy 3-64 | Time limit exceeded on test 25 | 2000 ms | 9600 KB |
| 372678628 | Apr/27/2026 10:04 | chenwz | A - Aviation Reform | C++17 (GCC 7-32) | Accepted | 468 ms | 100 KB |
| 372678147 | Apr/27/2026 09:57 | chenwz | J - Subtrees | C++17 (GCC 7-32) | Wrong answer on test 1 | 30 ms | 100 KB |
| 372677573 | Apr/27/2026 09:47 | chenwz | J - Subtrees | C++17 (GCC 7-32) | Accepted | 92 ms | 200 KB |
| 372673906 | Apr/27/2026 08:46 | chenwz | J - Subtrees | C++17 (GCC 7-32) | Wrong answer on test 1 | 62 ms | 200 KB |
| 372673674 | Apr/27/2026 08:43 | chenwz | J - Subtrees | C++17 (GCC 7-32) | Wrong answer on test 1 | 30 ms | 100 KB |
| 372671613 | Apr/27/2026 08:07 | chenwz | J - Subtrees | C++17 (GCC 7-32) | Accepted | 92 ms | 100 KB |
| 372671248 | Apr/27/2026 07:59 | chenwz | J - Subtrees | C++17 (GCC 7-32) | Wrong answer on test 10 | 62 ms | 100 KB |
| 372671230 | Apr/27/2026 07:58 | chenwz | I - Railroad Simulator | C++17 (GCC 7-32) | Accepted | 592 ms | 12500 KB |
| 372671211 | Apr/27/2026 07:58 | chenwz | D - Cyclic Index | C++17 (GCC 7-32) | Accepted | 92 ms | 100 KB |
| 372671191 | Apr/27/2026 07:57 | chenwz | B - Busy Beavers | C++17 (GCC 7-32) | Accepted | 1718 ms | 20700 KB |
| 372671175 | Apr/27/2026 07:57 | chenwz | A - Aviation Reform | C++17 (GCC 7-32) | Accepted | 280 ms | 0 KB |
| 372206895 | Apr/23/2026 09:55 | qwwqcy | E - New Hierarchy | C++20 (GCC 13-64) | Accepted | 92 ms | 100 KB |
| 371327496 | Apr/16/2026 07:30 | qwwqcy | E - New Hierarchy | C++20 (GCC 13-64) | Time limit exceeded on test 24 | 2000 ms | 700 KB |
| 371326041 | Apr/16/2026 07:03 | qwwqcy | E - New Hierarchy | C++20 (GCC 13-64) | Compilation error | 0 ms | 0 KB |
| 371325999 | Apr/16/2026 07:02 | qwwqcy | E - New Hierarchy | C++17 (GCC 7-32) | Compilation error | 0 ms | 0 KB |
| 371325958 | Apr/16/2026 07:01 | qwwqcy | I - Railroad Simulator | C++17 (GCC 7-32) | Accepted | 624 ms | 23100 KB |
| 371325914 | Apr/16/2026 07:00 | qwwqcy | I - Railroad Simulator | C++17 (GCC 7-32) | Accepted | 750 ms | 23100 KB |
| 371325468 | Apr/16/2026 06:52 | qwwqcy | E - New Hierarchy | C++17 (GCC 7-32) | Time limit exceeded on test 23 | 2000 ms | 400 KB |
| 371325435 | Apr/16/2026 06:51 | qwwqcy | E - New Hierarchy | C++20 (GCC 13-64) | Compilation error | 0 ms | 0 KB |
| 371325359 | Apr/16/2026 06:50 | qwwqcy | I - Railroad Simulator | C++20 (GCC 13-64) | Wrong answer on test 1 | 218 ms | 23000 KB |
| 371325332 | Apr/16/2026 06:50 | qwwqcy | J - Subtrees | C++20 (GCC 13-64) | Accepted | 92 ms | 100 KB |
| 371325226 | Apr/16/2026 06:48 | qwwqcy | J - Subtrees | C++20 (GCC 13-64) | Accepted | 156 ms | 100 KB |
| 371325175 | Apr/16/2026 06:47 | qwwqcy | E - New Hierarchy | C++20 (GCC 13-64) | Time limit exceeded on test 21 | 2000 ms | 700 KB |
| 371325118 | Apr/16/2026 06:46 | qwwqcy | D - Cyclic Index | C++20 (GCC 13-64) | Accepted | 92 ms | 100 KB |
| 371325006 | Apr/16/2026 06:43 | qwwqcy | D - Cyclic Index | C++20 (GCC 13-64) | Compilation error | 0 ms | 0 KB |
| 371324812 | Apr/16/2026 06:40 | qwwqcy | D - Cyclic Index | C++20 (GCC 13-64) | Accepted | 124 ms | 100 KB |
| 371324734 | Apr/16/2026 06:38 | qwwqcy | I - Railroad Simulator | C++20 (GCC 13-64) | Wrong answer on test 1 | 280 ms | 23000 KB |
| 371324592 | Apr/16/2026 06:35 | qwwqcy | B - Busy Beavers | C++20 (GCC 13-64) | Accepted | 530 ms | 97900 KB |
| 371324537 | Apr/16/2026 06:34 | qwwqcy | B - Busy Beavers | C++20 (GCC 13-64) | Accepted | 562 ms | 97900 KB |
| 371324230 | Apr/16/2026 06:28 | qwwqcy | A - Aviation Reform | C++20 (GCC 13-64) | Accepted | 342 ms | 1000 KB |
| 371324154 | Apr/16/2026 06:27 | qwwqcy | A - Aviation Reform | C++20 (GCC 13-64) | Accepted | 374 ms | 1000 KB |
| 370883947 | Apr/13/2026 06:43 | ezraft | A - Aviation Reform | C++20 (GCC 13-64) | Accepted | 156 ms | 300 KB |
| 370307175 | Apr/08/2026 19:40 | diss_quack | C - Center of the Universe | C++23 (GCC 14-64, msys2) | Accepted | 2436 ms | 100 KB |
| 370305624 | Apr/08/2026 19:26 | diss_quack | C - Center of the Universe | C++23 (GCC 14-64, msys2) | Runtime error on test 6 | 62 ms | 100 KB |
| 370015985 | Apr/06/2026 20:25 | ezraft | E - New Hierarchy | C++20 (GCC 13-64) | Accepted | 92 ms | 0 KB |
| 369923387 | Apr/06/2026 04:54 | ezraft | G - Nim for Three | C++20 (GCC 13-64) | Accepted | 92 ms | 100 KB |
| 369923364 | Apr/06/2026 04:53 | ezraft | G - Nim for Three | C++20 (GCC 13-64) | Wrong answer on test 14 | 62 ms | 100 KB |
| 369923103 | Apr/06/2026 04:48 | ezraft | G - Nim for Three | C++20 (GCC 13-64) | Wrong answer on test 14 | 62 ms | 100 KB |
| 369921150 | Apr/06/2026 03:57 | lced quacks: lce4113, ezraft# | C - Center of the Universe | C++20 (GCC 13-64) | Time limit exceeded on test 13 | 4000 ms | 400 KB |
| 369920361 | Apr/06/2026 03:29 | lced quacks: lce4113, ezraft# | B - Busy Beavers | C++20 (GCC 13-64) | Accepted | 1562 ms | 78300 KB |
| 369919818 | Apr/06/2026 03:12 | lced quacks: lce4113, ezraft# | F - Knights | C++20 (GCC 13-64) | Accepted | 92 ms | 0 KB |
| 369919470 | Apr/06/2026 03:01 | lced quacks: lce4113, ezraft# | F - Knights | C++20 (GCC 13-64) | Wrong answer on test 1 | 30 ms | 0 KB |
| 369919338 | Apr/06/2026 02:55 | lced quacks: lce4113, ezraft# | F - Knights | C++20 (GCC 13-64) | Wrong answer on test 2 | 30 ms | 0 KB |
| 369919280 | Apr/06/2026 02:53 | lced quacks: lce4113, ezraft# | F - Knights | C++20 (GCC 13-64) | Wrong answer on test 2 | 62 ms | 0 KB |
| 369919082 | Apr/06/2026 02:43 | lced quacks: lce4113, ezraft# | F - Knights | C++20 (GCC 13-64) | Wrong answer on test 2 | 30 ms | 0 KB |
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