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| Online Judge | Problem Set | Authors | Online Contests | User | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Web Board Home Page F.A.Qs Statistical Charts | Current Contest Past Contests Scheduled Contests Award Contest | |||||||||
| ID | Title | Ratio(AC/submit) | Date |
| 4032 | Kingdom Roadmap | 0%(0/289) | Aug 16, 2026 |
| 4029 | Huzita Axiom 6 | 0%(0/60) | Aug 14, 2026 |
| 4027 | Flights | 0%(0/118) | Aug 14, 2026 |
| 4036 | Cybercrime Donut Investigation | 0%(2/240) | Aug 14, 2026 |
| 4017 | Galaxy Interconnection | 2%(2/86) | Dec 25, 2024 |
| 4015 | Electrification | 1%(2/121) | Aug 16, 2026 |
| 4035 | Coin Collecting | 3%(4/114) | Jun 25, 2026 |
| 4024 | Caption | 5%(5/88) | Aug 20, 2019 |
| 4054 | KINA Is Not Abbreviation | 2%(6/300) | Aug 14, 2026 |
| 4053 | World of Goo | 4%(7/148) | Jan 29, 2024 |
| 4033 | Lanes | 6%(7/104) | Aug 14, 2026 |
| 4013 | Cube Coloring | 4%(12/282) | Dec 25, 2024 |
| 4004 | My World Cup | 18%(18/100) | Jun 25, 2026 |
| 4038 | Game, Set and Match | 32%(20/61) | Jun 25, 2026 |
| 4031 | Journey | 2%(20/917) | Nov 27, 2025 |
| 4009 | Porcelain Exhibitions | 14%(22/155) | Jun 25, 2026 |
| 4034 | Alphabet Soup | 23%(22/92) | Jun 25, 2026 |
| 4021 | Kids Like Cakes | 7%(26/362) | Mar 17, 2026 |
| 4037 | Distributing Ballot Boxes | 10%(35/325) | Jun 25, 2026 |
| 4040 | Non-negative Partial Sums | 10%(42/394) | Jun 25, 2026 |
| 4051 | Aeroplane Chess | 19%(46/242) | May 1, 2026 |
| 4010 | Shadow | 26%(50/187) | Jun 15, 2026 |
| 4041 | Peer Review | 42%(50/117) | Jun 25, 2026 |
| 4008 | Running relay | 16%(57/356) | Aug 1, 2026 |
| 4050 | Necklace | 15%(57/366) | Nov 8, 2023 |
| 4039 | Guess the Numbers | 26%(58/223) | Jun 25, 2026 |
| 4042 | Regular Convex Polygon | 34%(58/166) | Jun 25, 2026 |
| 4043 | Remoteland | 26%(72/271) | Jun 25, 2026 |
| 4019 | Immediate Delivery | 36%(72/195) | Mar 17, 2026 |
| 4025 | Dictionary Size | 17%(93/533) | Dec 24, 2024 |
| 4018 | High security | 26%(99/379) | Dec 24, 2024 |
| 4005 | Moles | 13%(106/762) | Jun 25, 2026 |
| 4026 | Eve | 27%(107/390) | Dec 24, 2024 |
| 4028 | GCD Guessing Game | 41%(159/385) | Oct 29, 2025 |
| 4023 | Binary Encoding | 42%(163/382) | Nov 25, 2025 |
| 4006 | Genghis Khan the Conqueror | 31%(170/539) | Oct 20, 2025 |
| 4020 | John's Inversions | 31%(229/729) | Dec 24, 2024 |
| 4049 | Chess | 22%(236/1030) | Dec 24, 2024 |
| 4012 | Black Square | 18%(265/1443) | Dec 24, 2024 |
| 4000 | National Treasures | 24%(272/1089) | Jul 30, 2026 |
| 4007 | Flood-it! | 35%(293/836) | Nov 27, 2025 |
| 4003 | Bob’s Race | 27%(296/1066) | Apr 5, 2026 |
| 4016 | Flat | 39%(320/816) | Mar 16, 2026 |
| 4002 | Alice's mooncake shop | 29%(366/1224) | Sep 6, 2026 |
| 4022 | ASCII Area | 45%(373/812) | Sep 5, 2026 |
| 4048 | Chinese Repeating Crossbow | 29%(416/1406) | Sep 6, 2026 |
| 4014 | Dice | 34%(453/1295) | Mar 17, 2026 |
| 4052 | Hrinity | 26%(604/2313) | Sep 5, 2026 |
| 4001 | Xiangqi | 23%(652/2804) | Aug 15, 2026 |
| 4044 | Score Sequence | 39%(674/1693) | Aug 28, 2026 |
| 4046 | Sightseeing | 22%(681/3080) | Sep 5, 2026 |
| 4047 | Garden | 37%(683/1836) | Aug 29, 2026 |
| 4045 | Power Station | 40%(718/1769) | Aug 29, 2026 |
| 4011 | Automated Telephone Exchange | 52%(1128/2168) | Jun 26, 2026 |
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