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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 |
| 3000 | Frogger | 28%(336/1191) | Jun 1, 2025 |
| 3001 | Gallup | 46%(276/589) | Dec 3, 2024 |
| 3002 | Jackpot | 33%(1543/4647) | May 5, 2025 |
| 3003 | Spiderman’s workout | 38%(763/1981) | May 20, 2025 |
| 3004 | Subway planning | 28%(430/1527) | May 5, 2025 |
| 3005 | Exploding CPU | 42%(232/544) | Nov 29, 2024 |
| 3006 | Dirichlet's Theorem on Arithmetic Progressions | 48%(11576/23690) | Jun 19, 2025 |
| 3007 | Organize Your Train part II | 28%(2708/9654) | May 6, 2025 |
| 3008 | Hexerpents of Hexwamp | 30%(102/334) | Jun 30, 2024 |
| 3009 | Curling 2.0 | 40%(17626/43107) | Aug 13, 2025 |
| 3010 | The Genome Database of All Space Life | 29%(258/875) | Jul 13, 2024 |
| 3011 | Secrets in Shadows | 22%(87/395) | Nov 7, 2021 |
| 3012 | A Number from Yanghui Triangle | 41%(999/2409) | May 5, 2025 |
| 3013 | Big Christmas Tree | 21%(6623/30899) | Aug 17, 2025 |
| 3014 | Cake Pieces and Plates | 31%(2204/6938) | Jun 24, 2025 |
| 3015 | Expected Difference | 26%(396/1499) | May 6, 2025 |
| 3016 | K-Monotonic | 34%(514/1481) | Aug 22, 2025 |
| 3017 | Cut the Sequence | 30%(4859/15996) | Aug 15, 2025 |
| 3018 | Giftbox | 28%(1145/4055) | May 26, 2025 |
| 3019 | Image Rotation | 29%(38/128) | Jul 30, 2020 |
| 3020 | Antenna Placement | 48%(6635/13688) | Aug 20, 2025 |
| 3021 | e-Coins | 48%(431/886) | May 6, 2025 |
| 3022 | The Uxuhul Voting System | 45%(177/390) | Dec 28, 2024 |
| 3023 | Submarines | 42%(173/409) | Sep 24, 2024 |
| 3024 | The Gossiping System | 36%(136/374) | Nov 10, 2024 |
| 3025 | Rings | 34%(406/1172) | Aug 14, 2024 |
| 3026 | Borg Maze | 31%(7867/25321) | Aug 18, 2025 |
| 3027 | Base equality | 60%(556/920) | May 6, 2025 |
| 3028 | Shoot-out | 29%(316/1067) | Feb 2, 2025 |
| 3029 | Tour Guide | 36%(341/947) | Feb 2, 2025 |
| 3030 | Nasty Hacks | 69%(10035/14525) | May 12, 2025 |
| 3031 | Jezzball | 35%(40/114) | Feb 2, 2025 |
| 3032 | Card Trick | 68%(3543/5206) | Jun 24, 2025 |
| 3033 | Traveling Salesman | 37%(171/455) | Feb 2, 2025 |
| 3034 | Whac-a-Mole | 29%(1298/4365) | May 11, 2025 |
| 3035 | Random Walking | 31%(278/885) | Feb 2, 2025 |
| 3036 | Honeycomb Walk | 66%(1787/2681) | Apr 30, 2025 |
| 3037 | Skiing | 25%(1833/7210) | May 27, 2025 |
| 3038 | Flying Right | 33%(827/2485) | Aug 17, 2025 |
| 3039 | Close Encounter | 36%(1340/3627) | May 20, 2025 |
| 3040 | Allowance | 42%(5210/12312) | Aug 13, 2025 |
| 3041 | Asteroids | 53%(18330/34536) | Aug 24, 2025 |
| 3042 | Grazing on the Run | 41%(1219/2973) | Aug 20, 2025 |
| 3043 | Walk the Talk | 41%(269/648) | Sep 3, 2022 |
| 3044 | City Skyline | 43%(1695/3859) | May 6, 2025 |
| 3045 | Cow Acrobats | 36%(4082/11256) | Aug 21, 2025 |
| 3046 | Ant Counting | 37%(4456/11985) | Aug 13, 2025 |
| 3047 | Bovine Birthday | 44%(1108/2510) | Jul 30, 2025 |
| 3048 | Max Factor | 36%(3832/10496) | Jul 30, 2025 |
| 3049 | Securing the Barn | 63%(1524/2416) | May 10, 2025 |
| 3050 | Hopscotch | 62%(6091/9742) | Aug 20, 2025 |
| 3051 | Satellite Photographs | 45%(3057/6665) | Jul 27, 2025 |
| 3052 | Geodes | 30%(48/158) | Sep 27, 2024 |
| 3053 | Bowling | 26%(242/924) | Nov 23, 2024 |
| 3054 | High Spies | 26%(37/140) | Sep 9, 2020 |
| 3055 | Digital Friends | 46%(546/1182) | Jun 12, 2022 |
| 3056 | The Bavarian Beer Party | 37%(485/1280) | Nov 2, 2024 |
| 3057 | Evacuation | 25%(1560/6019) | Jul 31, 2024 |
| 3058 | Decompression | 48%(293/610) | Jul 13, 2024 |
| 3059 | Rummikub | 35%(78/222) | Jul 15, 2024 |
| 3060 | Make it Manhattan | 40%(475/1178) | Aug 12, 2024 |
| 3061 | Subsequence | 38%(23253/61188) | Aug 22, 2025 |
| 3062 | Celebrity jeopardy | 55%(9794/17492) | May 19, 2025 |
| 3063 | Sherlock Holmes | 28%(257/888) | May 27, 2025 |
| 3064 | Payment System | 35%(69/193) | May 30, 2025 |
| 3065 | Stargates | 22%(555/2456) | May 27, 2025 |
| 3066 | Maximum | 57%(547/947) | May 27, 2025 |
| 3067 | Japan | 26%(11072/41813) | Aug 21, 2025 |
| 3068 | "Shortest" pair of paths | 49%(1131/2284) | Jun 25, 2025 |
| 3069 | Saruman's Army | 48%(14474/29562) | Aug 16, 2025 |
| 3070 | Fibonacci | 64%(22204/34419) | Aug 20, 2025 |
| 3071 | Football | 41%(4669/11129) | Aug 20, 2025 |
| 3072 | Robot | 33%(612/1815) | May 27, 2025 |
| 3073 | Spam | 56%(625/1113) | May 27, 2025 |
| 3074 | Sudoku | 34%(5159/14845) | Aug 20, 2025 |
| 3075 | Tic-Tac-Toe | 40%(918/2277) | Jul 21, 2024 |
| 3076 | Sudoku | 45%(3090/6754) | Aug 21, 2025 |
| 3077 | Rounders | 64%(5319/8257) | Jun 25, 2025 |
| 3078 | Q | 68%(1279/1869) | Jul 23, 2025 |
| 3079 | Enigmatologically Cruciverbalistic | 19%(125/656) | Jun 14, 2024 |
| 3080 | Blue Jeans | 43%(12148/27689) | Aug 17, 2025 |
| 3081 | Core Wars | 31%(68/219) | Apr 2, 2024 |
| 3082 | 'Roid Rage | 30%(300/979) | Jun 11, 2025 |
| 3083 | Children of the Candy Corn | 42%(7868/18666) | Aug 11, 2025 |
| 3084 | Panic Room | 51%(1224/2359) | May 11, 2025 |
| 3085 | Quick Change | 70%(4568/6474) | May 19, 2025 |
| 3086 | Triangular Sums | 69%(5711/8175) | Jun 25, 2025 |
| 3087 | Shuffle'm Up | 44%(11626/26020) | Aug 12, 2025 |
| 3088 | Push Botton Lock | 62%(1062/1687) | May 19, 2025 |
| 3089 | Sign Message Formatting | 19%(22/112) | Apr 23, 2025 |
| 3090 | Visible Lattice Points | 58%(7420/12707) | Aug 21, 2025 |
| 3091 | Triangular N-Queens Problem | 43%(396/908) | Aug 11, 2024 |
| 3092 | Non-divisible 2-3 Power Sums | 46%(524/1123) | Mar 26, 2024 |
| 3093 | Margaritas on the River Walk | 37%(1271/3346) | Aug 21, 2025 |
| 3094 | Quicksum | 66%(14422/21741) | Jun 18, 2025 |
| 3095 | Linear Pachinko | 69%(1195/1710) | May 21, 2025 |
| 3096 | Surprising Strings | 59%(5743/9729) | May 30, 2025 |
| 3097 | Falling Ice | 26%(109/418) | May 21, 2025 |
| 3098 | Frugal Search | 46%(494/1073) | Jun 20, 2025 |
| 3099 | Go Go Gorelians | 54%(580/1074) | Jun 25, 2025 |
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