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| Online Judge | Problem Set | Authors | Online Contests | User | ||||||
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| Web Board Home Page F.A.Qs Statistical Charts | Current Contest Past Contests Scheduled Contests Award Contest | |||||||||
| ID | Title | Ratio(AC/submit) | Date |
| 1000 | A+B Problem | 56%(330212/586748) | Jun 27, 2026 |
| 1001 | Exponentiation | 23%(49048/205874) | Jun 26, 2026 |
| 1002 | 487-3279 | 17%(60480/341162) | Jun 26, 2026 |
| 1003 | Hangover | 48%(76206/158591) | Jun 26, 2026 |
| 1004 | Financial Management | 37%(91341/246092) | Jun 26, 2026 |
| 1005 | I Think I Need a Houseboat | 42%(56299/133385) | Jun 26, 2026 |
| 1006 | Biorhythms | 32%(54460/166582) | Jun 26, 2026 |
| 1007 | DNA Sorting | 38%(50356/129415) | Jun 27, 2026 |
| 1008 | Maya Calendar | 30%(28931/94517) | Jun 26, 2026 |
| 1009 | Edge Detection | 24%(6267/25909) | Jun 26, 2026 |
| 1010 | STAMPS | 29%(6561/21922) | Jun 26, 2026 |
| 1011 | Sticks | 24%(44286/181068) | Jun 26, 2026 |
| 1012 | Joseph | 37%(24365/65157) | Jun 25, 2026 |
| 1013 | Counterfeit Dollar | 30%(18703/62021) | Jun 26, 2026 |
| 1014 | Dividing | 26%(22183/83181) | Jun 26, 2026 |
| 1015 | Jury Compromise | 27%(11369/41753) | Jun 10, 2026 |
| 1016 | Numbers That Count | 33%(8123/24026) | Jun 26, 2026 |
| 1017 | Packets | 33%(26349/79407) | Jun 10, 2026 |
| 1018 | Communication System | 34%(12848/36734) | Jun 26, 2026 |
| 1019 | Number Sequence | 28%(13918/48157) | Jun 26, 2026 |
| 1020 | Anniversary Cake | 32%(6692/20396) | Jun 10, 2026 |
| 1021 | 2D-Nim | 45%(2224/4843) | Jun 10, 2026 |
| 1022 | Packing Unit 4D Cubes | 36%(1104/3062) | Jun 10, 2026 |
| 1023 | The Fun Number System | 34%(4374/12548) | Jun 12, 2026 |
| 1024 | Tester Program | 36%(1271/3475) | May 6, 2026 |
| 1025 | Department | 25%(638/2530) | May 7, 2026 |
| 1026 | Cipher | 28%(7048/25044) | May 9, 2026 |
| 1027 | The Same Game | 35%(2823/7888) | Jun 10, 2026 |
| 1028 | Web Navigation | 43%(19990/45609) | Jun 26, 2026 |
| 1029 | False coin | 29%(9371/32221) | Jun 10, 2026 |
| 1030 | Rating | 26%(601/2306) | May 8, 2026 |
| 1031 | Fence | 35%(1547/4402) | May 6, 2026 |
| 1032 | Parliament | 42%(9007/21368) | Jun 24, 2026 |
| 1033 | Defragment | 31%(2518/7939) | Jun 10, 2026 |
| 1034 | The dog task | 40%(1513/3750) | May 7, 2026 |
| 1035 | Spell checker | 35%(11685/33170) | May 14, 2026 |
| 1036 | Gangsters | 28%(4191/14588) | Jun 19, 2026 |
| 1037 | A decorative fence | 38%(3888/10104) | Jun 16, 2026 |
| 1038 | Bugs Integrated, Inc. | 38%(4560/11828) | Jun 26, 2026 |
| 1039 | Pipe | 30%(4627/15093) | Jun 10, 2026 |
| 1040 | Transportation | 41%(2611/6270) | Jun 10, 2026 |
| 1041 | John's trip | 34%(4527/13137) | Jun 26, 2026 |
| 1042 | Gone Fishing | 33%(17233/51426) | Jun 27, 2026 |
| 1043 | What's In A Name? | 35%(1113/3177) | Jun 10, 2026 |
| 1044 | Date bugs | 16%(1644/10141) | Jun 26, 2026 |
| 1045 | Bode Plot | 59%(10518/17554) | Jun 26, 2026 |
| 1046 | Color Me Less | 48%(18305/38087) | Jun 25, 2026 |
| 1047 | Round and Round We Go | 46%(6551/14035) | Jun 26, 2026 |
| 1048 | Follow My Logic | 27%(713/2637) | May 7, 2026 |
| 1049 | Microprocessor Simulation | 29%(1071/3612) | Jun 10, 2026 |
| 1050 | To the Max | 52%(36351/69028) | Jun 24, 2026 |
| 1051 | P,MTHBGWB | 55%(5125/9211) | Jun 24, 2026 |
| 1052 | Plato's Blocks | 37%(442/1187) | May 8, 2026 |
| 1053 | Set Me | 45%(1653/3594) | Jun 2, 2026 |
| 1054 | The Troublesome Frog | 29%(4747/16146) | May 22, 2026 |
| 1055 | BULK MAILING | 29%(370/1273) | May 8, 2026 |
| 1056 | IMMEDIATE DECODABILITY | 45%(8015/17549) | Jun 26, 2026 |
| 1057 | FILE MAPPING | 45%(1397/3050) | Jun 24, 2026 |
| 1058 | The Gourmet Club | 29%(600/2011) | Jun 26, 2026 |
| 1059 | Chutes and Ladders | 2%(1217/47071) | May 20, 2026 |
| 1060 | Modular multiplication of polynomials | 46%(2502/5435) | Jun 26, 2026 |
| 1061 | 青蛙的约会 | 23%(37362/156861) | Jun 23, 2026 |
| 1062 | 昂贵的聘礼 | 31%(23006/74148) | Jun 26, 2026 |
| 1063 | Flip and Shift | 45%(3861/8451) | Jun 21, 2026 |
| 1064 | Cable master | 20%(21775/106918) | Jun 3, 2026 |
| 1065 | Wooden Sticks | 43%(13819/32036) | Jun 26, 2026 |
| 1066 | Treasure Hunt | 40%(4299/10616) | Jun 24, 2026 |
| 1067 | 取石子游戏 | 34%(18996/55125) | Jun 27, 2026 |
| 1068 | Parencodings | 58%(18793/32004) | Jun 24, 2026 |
| 1069 | The Bermuda Triangle | 45%(820/1794) | May 6, 2026 |
| 1070 | Deformed Wheel | 21%(212/1007) | May 8, 2026 |
| 1071 | Illusive Chase | 46%(718/1543) | Jun 26, 2026 |
| 1072 | Puzzle Out | 22%(360/1599) | May 7, 2026 |
| 1073 | The Willy Memorial Program | 26%(260/985) | May 6, 2026 |
| 1074 | Parallel Expectations | 29%(354/1208) | Mar 5, 2026 |
| 1075 | University Entrance Examination | 29%(321/1089) | Jun 26, 2026 |
| 1076 | Bowl | 20%(264/1262) | May 7, 2026 |
| 1077 | Eight | 38%(19972/52207) | Jun 26, 2026 |
| 1078 | Gizilch | 38%(793/2038) | May 7, 2026 |
| 1079 | Ratio | 37%(1680/4529) | May 14, 2026 |
| 1080 | Human Gene Functions | 56%(13491/23984) | Jun 26, 2026 |
| 1081 | You Who? | 28%(387/1348) | Jun 24, 2026 |
| 1082 | Calendar Game | 48%(3706/7592) | Jun 26, 2026 |
| 1083 | Moving Tables | 32%(13729/41863) | Jun 25, 2026 |
| 1084 | Square Destroyer | 46%(3209/6899) | Jun 12, 2026 |
| 1085 | Triangle War | 39%(1682/4249) | May 21, 2026 |
| 1086 | Unscrambling Images | 35%(387/1088) | Jun 26, 2026 |
| 1087 | A Plug for UNIX | 35%(8369/23651) | Jun 27, 2026 |
| 1088 | 滑雪 | 38%(52132/135116) | Jun 24, 2026 |
| 1089 | Intervals | 39%(4715/12085) | Jun 26, 2026 |
| 1090 | Chain | 32%(1294/3943) | May 7, 2026 |
| 1091 | 跳蚤 | 34%(4816/13871) | Jun 24, 2026 |
| 1092 | Farmland | 36%(569/1580) | Jun 23, 2026 |
| 1093 | Formatting Text | 28%(810/2841) | May 14, 2026 |
| 1094 | Sorting It All Out | 34%(16875/49017) | Jun 3, 2026 |
| 1095 | Trees Made to Order | 56%(4695/8378) | Jun 26, 2026 |
| 1096 | Space Station Shielding | 35%(695/1969) | Jun 26, 2026 |
| 1097 | Roads Scholar | 35%(376/1070) | Jun 26, 2026 |
| 1098 | Robots | 26%(224/848) | Jun 23, 2026 |
| 1099 | Square Ice | 38%(1913/4982) | Apr 10, 2026 |
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