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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%(329408/585571) | Jan 7, 2026 |
| 1001 | Exponentiation | 23%(48983/205598) | Jan 7, 2026 |
| 1002 | 487-3279 | 17%(60385/340930) | Jan 4, 2026 |
| 1003 | Hangover | 48%(76124/158460) | Jan 7, 2026 |
| 1004 | Financial Management | 37%(91177/245844) | Jan 7, 2026 |
| 1005 | I Think I Need a Houseboat | 42%(56273/133335) | Jan 4, 2026 |
| 1006 | Biorhythms | 32%(54388/166443) | Jan 6, 2026 |
| 1007 | DNA Sorting | 38%(50193/129190) | Jan 7, 2026 |
| 1008 | Maya Calendar | 30%(28881/94432) | Jan 7, 2026 |
| 1009 | Edge Detection | 24%(6256/25816) | Dec 17, 2025 |
| 1010 | STAMPS | 29%(6547/21853) | Dec 29, 2025 |
| 1011 | Sticks | 24%(43396/179845) | Jan 4, 2026 |
| 1012 | Joseph | 37%(24299/64940) | Jan 4, 2026 |
| 1013 | Counterfeit Dollar | 30%(18658/61914) | Jan 4, 2026 |
| 1014 | Dividing | 26%(22080/83022) | Dec 21, 2025 |
| 1015 | Jury Compromise | 27%(11350/41686) | Dec 22, 2025 |
| 1016 | Numbers That Count | 33%(8113/24009) | Dec 29, 2025 |
| 1017 | Packets | 33%(26300/79305) | Jan 4, 2026 |
| 1018 | Communication System | 34%(12817/36674) | Dec 17, 2025 |
| 1019 | Number Sequence | 28%(13879/48026) | Jan 4, 2026 |
| 1020 | Anniversary Cake | 32%(6676/20342) | Jan 4, 2026 |
| 1021 | 2D-Nim | 45%(2222/4840) | Dec 1, 2025 |
| 1022 | Packing Unit 4D Cubes | 36%(1103/3060) | Nov 26, 2025 |
| 1023 | The Fun Number System | 34%(4362/12527) | Nov 3, 2025 |
| 1024 | Tester Program | 36%(1268/3471) | Oct 17, 2025 |
| 1025 | Department | 25%(638/2522) | Nov 27, 2025 |
| 1026 | Cipher | 28%(7042/25021) | Oct 20, 2025 |
| 1027 | The Same Game | 35%(2823/7884) | Dec 25, 2025 |
| 1028 | Web Navigation | 43%(19918/45503) | Jan 5, 2026 |
| 1029 | False coin | 29%(9361/32197) | Nov 17, 2025 |
| 1030 | Rating | 26%(601/2301) | Nov 27, 2025 |
| 1031 | Fence | 35%(1547/4400) | Nov 27, 2025 |
| 1032 | Parliament | 42%(9002/21363) | Jan 4, 2026 |
| 1033 | Defragment | 31%(2509/7890) | Jan 6, 2026 |
| 1034 | The dog task | 40%(1510/3745) | Oct 17, 2025 |
| 1035 | Spell checker | 35%(11668/33129) | Jan 5, 2026 |
| 1036 | Gangsters | 28%(4159/14419) | Dec 23, 2025 |
| 1037 | A decorative fence | 38%(3884/10090) | Dec 13, 2025 |
| 1038 | Bugs Integrated, Inc. | 38%(4560/11827) | Dec 30, 2025 |
| 1039 | Pipe | 30%(4620/15082) | Dec 21, 2025 |
| 1040 | Transportation | 41%(2601/6255) | Nov 27, 2025 |
| 1041 | John's trip | 34%(4520/13125) | Jan 4, 2026 |
| 1042 | Gone Fishing | 33%(16964/50815) | Nov 30, 2025 |
| 1043 | What's In A Name? | 35%(1112/3163) | Nov 27, 2025 |
| 1044 | Date bugs | 15%(1609/10067) | Jan 6, 2026 |
| 1045 | Bode Plot | 59%(10510/17542) | Dec 31, 2025 |
| 1046 | Color Me Less | 48%(18295/38075) | Dec 31, 2025 |
| 1047 | Round and Round We Go | 46%(6539/14019) | Oct 17, 2025 |
| 1048 | Follow My Logic | 27%(711/2621) | Nov 27, 2025 |
| 1049 | Microprocessor Simulation | 29%(1065/3603) | Oct 17, 2025 |
| 1050 | To the Max | 52%(36287/68935) | Dec 23, 2025 |
| 1051 | P,MTHBGWB | 55%(5119/9201) | Oct 17, 2025 |
| 1052 | Plato's Blocks | 37%(440/1181) | Nov 27, 2025 |
| 1053 | Set Me | 46%(1651/3588) | Dec 29, 2025 |
| 1054 | The Troublesome Frog | 29%(4742/16132) | Nov 27, 2025 |
| 1055 | BULK MAILING | 29%(369/1270) | Nov 27, 2025 |
| 1056 | IMMEDIATE DECODABILITY | 45%(8003/17532) | Oct 17, 2025 |
| 1057 | FILE MAPPING | 45%(1396/3048) | Nov 27, 2025 |
| 1058 | The Gourmet Club | 29%(593/1999) | Oct 13, 2025 |
| 1059 | Chutes and Ladders | 2%(1166/46991) | Oct 21, 2025 |
| 1060 | Modular multiplication of polynomials | 45%(2492/5420) | Dec 18, 2025 |
| 1061 | 青蛙的约会 | 23%(37290/156689) | Jan 6, 2026 |
| 1062 | 昂贵的聘礼 | 31%(22943/73986) | Dec 21, 2025 |
| 1063 | Flip and Shift | 45%(3859/8442) | Dec 20, 2025 |
| 1064 | Cable master | 20%(21737/106805) | Dec 30, 2025 |
| 1065 | Wooden Sticks | 43%(13811/32010) | Dec 30, 2025 |
| 1066 | Treasure Hunt | 40%(4282/10571) | Nov 22, 2025 |
| 1067 | 取石子游戏 | 34%(18827/54933) | Jan 6, 2026 |
| 1068 | Parencodings | 58%(18775/31982) | Oct 30, 2025 |
| 1069 | The Bermuda Triangle | 45%(820/1792) | Nov 27, 2025 |
| 1070 | Deformed Wheel | 21%(212/988) | Nov 27, 2025 |
| 1071 | Illusive Chase | 46%(716/1534) | Dec 15, 2025 |
| 1072 | Puzzle Out | 22%(359/1589) | Nov 27, 2025 |
| 1073 | The Willy Memorial Program | 26%(260/984) | Nov 27, 2025 |
| 1074 | Parallel Expectations | 29%(354/1206) | Nov 27, 2025 |
| 1075 | University Entrance Examination | 29%(315/1068) | Oct 15, 2025 |
| 1076 | Bowl | 21%(264/1245) | Nov 27, 2025 |
| 1077 | Eight | 38%(19901/52103) | Dec 30, 2025 |
| 1078 | Gizilch | 38%(792/2031) | Nov 27, 2025 |
| 1079 | Ratio | 36%(1670/4514) | Oct 13, 2025 |
| 1080 | Human Gene Functions | 56%(13318/23768) | Dec 25, 2025 |
| 1081 | You Who? | 28%(378/1334) | Dec 19, 2025 |
| 1082 | Calendar Game | 48%(3689/7575) | Dec 24, 2025 |
| 1083 | Moving Tables | 32%(13726/41854) | Nov 22, 2025 |
| 1084 | Square Destroyer | 46%(3203/6882) | Nov 27, 2025 |
| 1085 | Triangle War | 39%(1682/4248) | Oct 13, 2025 |
| 1086 | Unscrambling Images | 36%(380/1044) | Oct 13, 2025 |
| 1087 | A Plug for UNIX | 35%(8302/23377) | Dec 19, 2025 |
| 1088 | 滑雪 | 38%(52070/134998) | Jan 5, 2026 |
| 1089 | Intervals | 38%(4705/12067) | Dec 15, 2025 |
| 1090 | Chain | 32%(1286/3923) | Dec 15, 2025 |
| 1091 | 跳蚤 | 32%(4215/13092) | Dec 8, 2025 |
| 1092 | Farmland | 35%(561/1566) | Oct 22, 2025 |
| 1093 | Formatting Text | 28%(809/2838) | Oct 13, 2025 |
| 1094 | Sorting It All Out | 34%(16854/48953) | Dec 30, 2025 |
| 1095 | Trees Made to Order | 56%(4685/8361) | Oct 13, 2025 |
| 1096 | Space Station Shielding | 35%(690/1964) | Oct 13, 2025 |
| 1097 | Roads Scholar | 34%(367/1050) | Oct 14, 2025 |
| 1098 | Robots | 26%(222/836) | Dec 14, 2025 |
| 1099 | Square Ice | 38%(1912/4981) | Oct 26, 2025 |
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