→ About Contest
The 2005 ACM East Central North America Regional Programming Contest (ACM ECNA RPC) was held on Saturday November 5, 2005. We had 113 teams drawn from 65 colleges and universities throughout western Pennsylvania, Ohio, Michigan, eastern Ontario, and Indiana (excluding the Greater Chicago Metropolitan Area).
→ 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 |
|---|---|---|---|---|---|---|---|
| 393270675 | Oct/05/2026 12:23 | HeartBlueArchive | B - Countdown | C++23 (GCC 14-64, msys2) | Accepted | 109 ms | 0 KB |
| 384995830 | Jul/31/2026 17:08 | KhoaVN2008# | E - Reliable Nets | C++20 (GCC 13-64) | Wrong answer on test 2 | 46 ms | 3900 KB |
| 384995216 | Jul/31/2026 17:03 | KhoaVN2008# | E - Reliable Nets | C++20 (GCC 13-64) | Wrong answer on test 2 | 46 ms | 3900 KB |
| 384995067 | Jul/31/2026 17:02 | KhoaVN2008# | E - Reliable Nets | C++20 (GCC 13-64) | Wrong answer on test 2 | 31 ms | 3900 KB |
| 384995031 | Jul/31/2026 17:02 | KhoaVN2008# | E - Reliable Nets | C++20 (GCC 13-64) | Compilation error | 0 ms | 0 KB |
| 384994636 | Jul/31/2026 16:58 | KhoaVN2008# | E - Reliable Nets | C++20 (GCC 13-64) | Wrong answer on test 2 | 390 ms | 3900 KB |
| 384994549 | Jul/31/2026 16:58 | KhoaVN2008# | E - Reliable Nets | C++20 (GCC 13-64) | Wrong answer on test 2 | 265 ms | 3800 KB |
| 384994470 | Jul/31/2026 16:57 | KhoaVN2008# | E - Reliable Nets | C++20 (GCC 13-64) | Wrong answer on test 1 | 0 ms | 3800 KB |
| 384992272 | Jul/31/2026 16:36 | KhoaVN2008# | H - Two Ends | C++20 (GCC 13-64) | Accepted | 46 ms | 4100 KB |
| 384992159 | Jul/31/2026 16:35 | KhoaVN2008# | H - Two Ends | C++20 (GCC 13-64) | Wrong answer on test 1 | 31 ms | 4000 KB |
| 384290721 | Jul/26/2026 09:37 | HeartBlueArchive | H - Two Ends | C++23 (GCC 14-64, msys2) | Accepted | 46 ms | 8000 KB |
| 383497486 | Jul/19/2026 20:00 | enarckay | D - Queens, Knights and Pawns | C++23 (GCC 14-64, msys2) | Accepted | 31 ms | 2200 KB |
| 383497045 | Jul/19/2026 19:57 | enarckay | D - Queens, Knights and Pawns | C++23 (GCC 14-64, msys2) | Wrong answer on test 1 | 0 ms | 1800 KB |
| 371640976 | Apr/18/2026 13:52 | Am I Wrong...?: VuDinhLongg, LonggVuz, 1stPrizeOLPCT26# | D - Queens, Knights and Pawns | C++17 (GCC 7-32) | Accepted | 46 ms | 7900 KB |
| 371638617 | Apr/18/2026 13:26 | Am I Wrong...?: VuDinhLongg, LonggVuz, 1stPrizeOLPCT26# | E - Reliable Nets | C++17 (GCC 7-32) | Accepted | 500 ms | 0 KB |
| 371636816 | Apr/18/2026 13:07 | Am I Wrong...?: VuDinhLongg, LonggVuz, 1stPrizeOLPCT26# | E - Reliable Nets | C++17 (GCC 7-32) | Wrong answer on test 2 | 15 ms | 100 KB |
| 371636781 | Apr/18/2026 13:06 | Am I Wrong...?: VuDinhLongg, LonggVuz, 1stPrizeOLPCT26# | E - Reliable Nets | C++17 (GCC 7-32) | Wrong answer on test 1 | 15 ms | 0 KB |
| 371635651 | Apr/18/2026 12:53 | Am I Wrong...?: VuDinhLongg, LonggVuz, 1stPrizeOLPCT26# | H - Two Ends | C++17 (GCC 7-32) | Accepted | 93 ms | 15700 KB |
| 371635097 | Apr/18/2026 12:47 | Am I Wrong...?: VuDinhLongg, LonggVuz, 1stPrizeOLPCT26# | H - Two Ends | C++17 (GCC 7-32) | Time limit exceeded on test 2 | 1000 ms | 0 KB |
| 367153837 | Mar/17/2026 22:24 | Rodri1721 | H - Two Ends | C++23 (GCC 14-64, msys2) | Accepted | 31 ms | 11900 KB |
| 367153488 | Mar/17/2026 22:20 | Rodri1721 | H - Two Ends | C++23 (GCC 14-64, msys2) | Wrong answer on test 2 | 31 ms | 11900 KB |
| 367149292 | Mar/17/2026 21:37 | Rodri1721 | G - Swamp Things | C++23 (GCC 14-64, msys2) | Accepted | 671 ms | 0 KB |
| 367149111 | Mar/17/2026 21:36 | Rodri1721 | G - Swamp Things | C++23 (GCC 14-64, msys2) | Wrong answer on test 2 | 328 ms | 0 KB |
| 367135064 | Mar/17/2026 19:47 | Rodri1721 | E - Reliable Nets | C++23 (GCC 14-64, msys2) | Accepted | 250 ms | 0 KB |
| 367018688 | Mar/16/2026 20:29 | Rodri1721 | E - Reliable Nets | C++23 (GCC 14-64, msys2) | Time limit exceeded on test 2 | 1000 ms | 0 KB |
| 367018506 | Mar/16/2026 20:27 | Rodri1721 | E - Reliable Nets | C++23 (GCC 14-64, msys2) | Time limit exceeded on test 2 | 1000 ms | 0 KB |
| 366983112 | Mar/16/2026 18:30 | Rodri1721 | E - Reliable Nets | C++23 (GCC 14-64, msys2) | Time limit exceeded on test 2 | 1000 ms | 0 KB |
| 366835182 | Mar/15/2026 19:08 | Rodri1721 | E - Reliable Nets | C++23 (GCC 14-64, msys2) | Accepted | 62 ms | 0 KB |
| 366834744 | Mar/15/2026 19:04 | Rodri1721 | E - Reliable Nets | C++23 (GCC 14-64, msys2) | Time limit exceeded on test 2 | 1000 ms | 0 KB |
| 366834547 | Mar/15/2026 19:03 | Rodri1721 | E - Reliable Nets | C++23 (GCC 14-64, msys2) | Wrong answer on test 1 | 31 ms | 0 KB |
| 366745630 | Mar/15/2026 03:31 | Rodri1721 | B - Countdown | C++23 (GCC 14-64, msys2) | Accepted | 109 ms | 0 KB |
| 366745275 | Mar/15/2026 03:21 | Rodri1721 | B - Countdown | C++23 (GCC 14-64, msys2) | Wrong answer on test 2 | 93 ms | 0 KB |
| 366743923 | Mar/15/2026 02:44 | Rodri1721 | A - ACM (ACronym Maker) | C++23 (GCC 14-64, msys2) | Accepted | 31 ms | 0 KB |
| 366742857 | Mar/15/2026 02:30 | Rodri1721 | A - ACM (ACronym Maker) | C++23 (GCC 14-64, msys2) | Accepted | 31 ms | 100 KB |
| 366742066 | Mar/15/2026 02:09 | Rodri1721 | A - ACM (ACronym Maker) | C++23 (GCC 14-64, msys2) | Wrong answer on test 2 | 31 ms | 0 KB |
| 350148510 | Nov/22/2025 07:51 | TTP when wanna do contest alone: CatnipIsAddictive# | E - Reliable Nets | C++23 (GCC 14-64, msys2) | Wrong answer on test 1 | 46 ms | 0 KB |
| 350148478 | Nov/22/2025 07:51 | TTP when wanna do contest alone: CatnipIsAddictive# | E - Reliable Nets | C++23 (GCC 14-64, msys2) | Wrong answer on test 2 | 46 ms | 0 KB |
| 350147404 | Nov/22/2025 07:34 | TTP when wanna do contest alone: CatnipIsAddictive# | H - Two Ends | C++23 (GCC 14-64, msys2) | Accepted | 31 ms | 4000 KB |
| 350147373 | Nov/22/2025 07:34 | TTP when wanna do contest alone: CatnipIsAddictive# | H - Two Ends | C++23 (GCC 14-64, msys2) | Wrong answer on test 1 | 31 ms | 4000 KB |
| 340895049 | Sep/28/2025 15:32 | AgricultureNine: DuckingWJ# | B - Countdown | C++17 (GCC 7-32) | Accepted | 171 ms | 0 KB |
| 340893055 | Sep/28/2025 15:17 | AgricultureNine: DuckingWJ# | B - Countdown | C++17 (GCC 7-32) | Wrong answer on test 2 | 62 ms | 0 KB |
| 340892340 | Sep/28/2025 15:12 | AgricultureNine: DuckingWJ# | B - Countdown | C++17 (GCC 7-32) | Wrong answer on test 2 | 46 ms | 0 KB |
| 340891493 | Sep/28/2025 15:06 | AgricultureNine: DuckingWJ# | B - Countdown | C++17 (GCC 7-32) | Wrong answer on test 2 | 93 ms | 0 KB |
| 340885636 | Sep/28/2025 14:19 | AgricultureNine: DuckingWJ# | H - Two Ends | C++17 (GCC 7-32) | Accepted | 218 ms | 2500 KB |
| 340876233 | Sep/28/2025 13:02 | AgricultureNine: DuckingWJ# | D - Queens, Knights and Pawns | C++17 (GCC 7-32) | Accepted | 31 ms | 800 KB |
| 340867904 | Sep/28/2025 12:18 | AgricultureNine: DuckingWJ# | H - Two Ends | C++17 (GCC 7-32) | Wrong answer on test 2 | 46 ms | 3900 KB |
| 334185645 | Aug/16/2025 21:53 | Amigos do Fernandes: DaysGabriel, gustavohenriquefs, Filer# | H - Two Ends | C++20 (GCC 13-64) | Time limit exceeded on test 2 | 1000 ms | 0 KB |
| 334185379 | Aug/16/2025 21:52 | Amigos do Fernandes: DaysGabriel, gustavohenriquefs, Filer# | H - Two Ends | C++20 (GCC 13-64) | Time limit exceeded on test 2 | 1000 ms | 0 KB |
| 334185012 | Aug/16/2025 21:49 | Amigos do Fernandes: DaysGabriel, gustavohenriquefs, Filer# | H - Two Ends | C++20 (GCC 13-64) | Wrong answer on test 2 | 46 ms | 0 KB |
| 334184503 | Aug/16/2025 21:45 | Amigos do Fernandes: DaysGabriel, gustavohenriquefs, Filer# | H - Two Ends | C++20 (GCC 13-64) | Wrong answer on test 1 | 30 ms | 0 KB |
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