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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 |
| 1059 | Chutes and Ladders | 2%(1166/46991) | Oct 21, 2025 |
| 1044 | Date bugs | 15%(1520/9695) | Oct 22, 2025 |
| 1002 | 487-3279 | 17%(60366/340825) | Oct 27, 2025 |
| 1064 | Cable master | 20%(21511/106115) | Oct 25, 2025 |
| 1076 | Bowl | 21%(263/1243) | Oct 22, 2025 |
| 1070 | Deformed Wheel | 21%(212/983) | Oct 16, 2025 |
| 1072 | Puzzle Out | 22%(359/1588) | Oct 16, 2025 |
| 1061 | 青蛙的约会 | 23%(37254/156620) | Oct 23, 2025 |
| 1001 | Exponentiation | 23%(48964/205480) | Oct 29, 2025 |
| 1011 | Sticks | 24%(43363/179764) | Oct 27, 2025 |
| 1009 | Edge Detection | 24%(6254/25807) | Oct 27, 2025 |
| 1025 | Department | 25%(638/2520) | Oct 22, 2025 |
| 1030 | Rating | 26%(600/2299) | Oct 17, 2025 |
| 1073 | The Willy Memorial Program | 26%(260/983) | Aug 1, 2025 |
| 1098 | Robots | 26%(222/835) | Oct 20, 2025 |
| 1014 | Dividing | 26%(22076/83014) | Oct 28, 2025 |
| 1048 | Follow My Logic | 27%(711/2619) | Oct 17, 2025 |
| 1015 | Jury Compromise | 27%(11344/41644) | Oct 28, 2025 |
| 1026 | Cipher | 28%(7042/25021) | Oct 20, 2025 |
| 1081 | You Who? | 28%(378/1331) | Oct 23, 2025 |
| 1093 | Formatting Text | 28%(809/2838) | Oct 13, 2025 |
| 1036 | Gangsters | 28%(4158/14407) | Oct 23, 2025 |
| 1019 | Number Sequence | 28%(13877/48018) | Oct 24, 2025 |
| 1029 | False coin | 29%(9361/32194) | Oct 22, 2025 |
| 1055 | BULK MAILING | 29%(369/1268) | Oct 17, 2025 |
| 1074 | Parallel Expectations | 29%(354/1205) | Sep 4, 2025 |
| 1054 | The Troublesome Frog | 29%(4741/16130) | Oct 17, 2025 |
| 1075 | University Entrance Examination | 29%(315/1068) | Oct 15, 2025 |
| 1049 | Microprocessor Simulation | 29%(1065/3603) | Oct 17, 2025 |
| 1058 | The Gourmet Club | 29%(593/1999) | Oct 13, 2025 |
| 1010 | STAMPS | 29%(6544/21838) | Oct 27, 2025 |
| 1013 | Counterfeit Dollar | 30%(18656/61896) | Oct 28, 2025 |
| 1008 | Maya Calendar | 30%(28834/94228) | Oct 27, 2025 |
| 1039 | Pipe | 30%(4615/15072) | Oct 23, 2025 |
| 1062 | 昂贵的聘礼 | 31%(22925/73892) | Oct 28, 2025 |
| 1091 | 跳蚤 | 32%(4215/13089) | Oct 23, 2025 |
| 1006 | Biorhythms | 32%(54366/166375) | Oct 29, 2025 |
| 1090 | Chain | 32%(1286/3922) | Oct 13, 2025 |
| 1083 | Moving Tables | 32%(13706/41790) | Oct 18, 2025 |
| 1020 | Anniversary Cake | 32%(6674/20339) | Oct 15, 2025 |
| 1017 | Packets | 33%(26267/79204) | Oct 29, 2025 |
| 1042 | Gone Fishing | 33%(16943/50777) | Oct 28, 2025 |
| 1016 | Numbers That Count | 33%(8112/24006) | Oct 28, 2025 |
| 1067 | 取石子游戏 | 34%(18807/54892) | Oct 28, 2025 |
| 1033 | Defragment | 34%(2433/7070) | Oct 17, 2025 |
| 1041 | John's trip | 34%(4519/13123) | Oct 17, 2025 |
| 1094 | Sorting It All Out | 34%(16850/48927) | Oct 25, 2025 |
| 1023 | The Fun Number System | 34%(4361/12526) | Oct 23, 2025 |
| 1018 | Communication System | 34%(12812/36661) | Oct 22, 2025 |
| 1097 | Roads Scholar | 34%(367/1050) | Oct 14, 2025 |
| 1096 | Space Station Shielding | 35%(690/1964) | Oct 13, 2025 |
| 1031 | Fence | 35%(1546/4398) | Oct 21, 2025 |
| 1043 | What's In A Name? | 35%(1112/3162) | Oct 23, 2025 |
| 1035 | Spell checker | 35%(11587/32691) | Oct 20, 2025 |
| 1087 | A Plug for UNIX | 35%(8292/23328) | Oct 18, 2025 |
| 1092 | Farmland | 35%(561/1566) | Oct 22, 2025 |
| 1027 | The Same Game | 35%(2822/7854) | Oct 17, 2025 |
| 1022 | Packing Unit 4D Cubes | 36%(1102/3055) | Oct 23, 2025 |
| 1086 | Unscrambling Images | 36%(380/1044) | Oct 13, 2025 |
| 1024 | Tester Program | 36%(1268/3471) | Oct 17, 2025 |
| 1079 | Ratio | 36%(1670/4514) | Oct 13, 2025 |
| 1004 | Financial Management | 37%(91118/245662) | Oct 27, 2025 |
| 1052 | Plato's Blocks | 37%(439/1179) | Oct 17, 2025 |
| 1012 | Joseph | 37%(24289/64917) | Oct 27, 2025 |
| 1077 | Eight | 38%(19756/51533) | Oct 20, 2025 |
| 1099 | Square Ice | 38%(1912/4981) | Oct 26, 2025 |
| 1037 | A decorative fence | 38%(3884/10086) | Oct 22, 2025 |
| 1038 | Bugs Integrated, Inc. | 38%(4558/11822) | Oct 23, 2025 |
| 1088 | 滑雪 | 38%(52055/134950) | Oct 29, 2025 |
| 1007 | DNA Sorting | 38%(50157/129073) | Oct 27, 2025 |
| 1089 | Intervals | 38%(4663/11980) | Oct 25, 2025 |
| 1078 | Gizilch | 39%(792/2029) | Oct 13, 2025 |
| 1085 | Triangle War | 39%(1682/4248) | Oct 13, 2025 |
| 1034 | The dog task | 40%(1510/3745) | Oct 17, 2025 |
| 1066 | Treasure Hunt | 40%(4281/10569) | Oct 17, 2025 |
| 1040 | Transportation | 41%(2600/6253) | Oct 17, 2025 |
| 1032 | Parliament | 42%(9001/21360) | Oct 28, 2025 |
| 1005 | I Think I Need a Houseboat | 42%(56184/133071) | Oct 28, 2025 |
| 1065 | Wooden Sticks | 43%(13809/32008) | Oct 19, 2025 |
| 1028 | Web Navigation | 43%(19819/45237) | Oct 29, 2025 |
| 1056 | IMMEDIATE DECODABILITY | 45%(8003/17532) | Oct 17, 2025 |
| 1069 | The Bermuda Triangle | 45%(819/1791) | Oct 22, 2025 |
| 1063 | Flip and Shift | 45%(3857/8434) | Oct 13, 2025 |
| 1057 | FILE MAPPING | 45%(1396/3046) | Oct 13, 2025 |
| 1021 | 2D-Nim | 45%(2222/4836) | Oct 17, 2025 |
| 1060 | Modular multiplication of polynomials | 45%(2489/5416) | Oct 13, 2025 |
| 1053 | Set Me | 46%(1651/3586) | Oct 17, 2025 |
| 1084 | Square Destroyer | 46%(3203/6881) | Oct 13, 2025 |
| 1047 | Round and Round We Go | 46%(6539/14019) | Oct 17, 2025 |
| 1071 | Illusive Chase | 46%(715/1530) | Oct 13, 2025 |
| 1003 | Hangover | 48%(76038/158251) | Oct 28, 2025 |
| 1046 | Color Me Less | 48%(18293/38070) | Oct 17, 2025 |
| 1082 | Calendar Game | 48%(3689/7570) | Oct 13, 2025 |
| 1050 | To the Max | 52%(36277/68897) | Oct 20, 2025 |
| 1051 | P,MTHBGWB | 55%(5119/9201) | Oct 17, 2025 |
| 1095 | Trees Made to Order | 56%(4685/8361) | Oct 13, 2025 |
| 1080 | Human Gene Functions | 56%(13308/23736) | Oct 18, 2025 |
| 1000 | A+B Problem | 56%(329146/584930) | Oct 29, 2025 |
| 1068 | Parencodings | 58%(18774/31981) | Oct 23, 2025 |
| 1045 | Bode Plot | 59%(10505/17530) | Oct 17, 2025 |
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