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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%(337/1192) | Oct 20, 2025 |
| 3001 | Gallup | 46%(276/589) | Dec 3, 2024 |
| 3002 | Jackpot | 33%(1544/4650) | Oct 18, 2025 |
| 3003 | Spiderman’s workout | 38%(766/1984) | Oct 18, 2025 |
| 3004 | Subway planning | 28%(432/1540) | Oct 18, 2025 |
| 3005 | Exploding CPU | 42%(232/545) | Oct 20, 2025 |
| 3006 | Dirichlet's Theorem on Arithmetic Progressions | 48%(11581/23695) | Nov 12, 2025 |
| 3007 | Organize Your Train part II | 28%(2710/9657) | Nov 12, 2025 |
| 3008 | Hexerpents of Hexwamp | 30%(102/335) | Oct 19, 2025 |
| 3009 | Curling 2.0 | 40%(17629/43124) | Nov 3, 2025 |
| 3010 | The Genome Database of All Space Life | 29%(258/876) | Oct 19, 2025 |
| 3011 | Secrets in Shadows | 22%(87/395) | Nov 7, 2021 |
| 3012 | A Number from Yanghui Triangle | 41%(1001/2412) | Oct 29, 2025 |
| 3013 | Big Christmas Tree | 21%(6624/30910) | Oct 20, 2025 |
| 3014 | Cake Pieces and Plates | 31%(2207/6946) | Oct 18, 2025 |
| 3015 | Expected Difference | 26%(398/1502) | Oct 21, 2025 |
| 3016 | K-Monotonic | 34%(518/1488) | Nov 10, 2025 |
| 3017 | Cut the Sequence | 30%(4862/16021) | Oct 20, 2025 |
| 3018 | Giftbox | 28%(1149/4066) | Sep 19, 2025 |
| 3019 | Image Rotation | 29%(38/128) | Jul 30, 2020 |
| 3020 | Antenna Placement | 48%(6638/13691) | Oct 21, 2025 |
| 3021 | e-Coins | 48%(434/889) | Oct 20, 2025 |
| 3022 | The Uxuhul Voting System | 45%(178/391) | Oct 17, 2025 |
| 3023 | Submarines | 42%(174/410) | Oct 20, 2025 |
| 3024 | The Gossiping System | 36%(136/375) | Oct 19, 2025 |
| 3025 | Rings | 34%(406/1173) | Oct 20, 2025 |
| 3026 | Borg Maze | 31%(7867/25322) | Oct 17, 2025 |
| 3027 | Base equality | 60%(559/923) | Oct 19, 2025 |
| 3028 | Shoot-out | 29%(317/1070) | Sep 6, 2025 |
| 3029 | Tour Guide | 35%(341/948) | Oct 18, 2025 |
| 3030 | Nasty Hacks | 69%(10037/14527) | Oct 28, 2025 |
| 3031 | Jezzball | 34%(40/115) | Oct 18, 2025 |
| 3032 | Card Trick | 68%(3548/5213) | Oct 19, 2025 |
| 3033 | Traveling Salesman | 37%(171/455) | Feb 2, 2025 |
| 3034 | Whac-a-Mole | 29%(1299/4367) | Oct 18, 2025 |
| 3035 | Random Walking | 31%(280/888) | Oct 18, 2025 |
| 3036 | Honeycomb Walk | 66%(1788/2682) | Oct 19, 2025 |
| 3037 | Skiing | 25%(1834/7213) | Oct 21, 2025 |
| 3038 | Flying Right | 33%(854/2585) | Oct 17, 2025 |
| 3039 | Close Encounter | 36%(1341/3628) | Oct 19, 2025 |
| 3040 | Allowance | 42%(5213/12315) | Oct 31, 2025 |
| 3041 | Asteroids | 53%(18334/34546) | Oct 18, 2025 |
| 3042 | Grazing on the Run | 41%(1221/2975) | Oct 22, 2025 |
| 3043 | Walk the Talk | 41%(269/649) | Oct 18, 2025 |
| 3044 | City Skyline | 43%(1698/3864) | Oct 20, 2025 |
| 3045 | Cow Acrobats | 36%(4096/11307) | Oct 18, 2025 |
| 3046 | Ant Counting | 37%(4459/11991) | Nov 12, 2025 |
| 3047 | Bovine Birthday | 44%(1111/2513) | Oct 20, 2025 |
| 3048 | Max Factor | 36%(3836/10507) | Oct 20, 2025 |
| 3049 | Securing the Barn | 63%(1525/2418) | Nov 12, 2025 |
| 3050 | Hopscotch | 62%(6100/9758) | Nov 12, 2025 |
| 3051 | Satellite Photographs | 45%(3060/6668) | Oct 19, 2025 |
| 3052 | Geodes | 30%(49/159) | Oct 20, 2025 |
| 3053 | Bowling | 25%(245/949) | Oct 18, 2025 |
| 3054 | High Spies | 26%(37/141) | Oct 19, 2025 |
| 3055 | Digital Friends | 46%(549/1190) | Oct 20, 2025 |
| 3056 | The Bavarian Beer Party | 37%(487/1283) | Nov 12, 2025 |
| 3057 | Evacuation | 25%(1561/6021) | Oct 19, 2025 |
| 3058 | Decompression | 48%(293/610) | Jul 13, 2024 |
| 3059 | Rummikub | 34%(78/223) | Oct 21, 2025 |
| 3060 | Make it Manhattan | 40%(475/1178) | Aug 12, 2024 |
| 3061 | Subsequence | 38%(23375/61475) | Nov 12, 2025 |
| 3062 | Celebrity jeopardy | 55%(9797/17496) | Oct 21, 2025 |
| 3063 | Sherlock Holmes | 29%(259/891) | Oct 19, 2025 |
| 3064 | Payment System | 35%(69/193) | May 30, 2025 |
| 3065 | Stargates | 22%(555/2457) | Oct 20, 2025 |
| 3066 | Maximum | 57%(549/950) | Oct 21, 2025 |
| 3067 | Japan | 26%(11074/41831) | Oct 21, 2025 |
| 3068 | "Shortest" pair of paths | 49%(1132/2285) | Oct 12, 2025 |
| 3069 | Saruman's Army | 48%(14502/29616) | Nov 11, 2025 |
| 3070 | Fibonacci | 64%(22298/34658) | Nov 12, 2025 |
| 3071 | Football | 41%(4691/11218) | Nov 11, 2025 |
| 3072 | Robot | 33%(612/1816) | Oct 20, 2025 |
| 3073 | Spam | 56%(625/1113) | May 27, 2025 |
| 3074 | Sudoku | 34%(5166/14869) | Oct 29, 2025 |
| 3075 | Tic-Tac-Toe | 40%(919/2279) | Oct 19, 2025 |
| 3076 | Sudoku | 45%(3090/6757) | Oct 24, 2025 |
| 3077 | Rounders | 64%(5322/8260) | Oct 20, 2025 |
| 3078 | Q | 68%(1282/1872) | Nov 12, 2025 |
| 3079 | Enigmatologically Cruciverbalistic | 19%(126/657) | Oct 21, 2025 |
| 3080 | Blue Jeans | 43%(12152/27699) | Oct 20, 2025 |
| 3081 | Core Wars | 31%(68/219) | Apr 2, 2024 |
| 3082 | 'Roid Rage | 30%(302/983) | Oct 20, 2025 |
| 3083 | Children of the Candy Corn | 42%(7879/18687) | Oct 27, 2025 |
| 3084 | Panic Room | 51%(1224/2360) | Oct 21, 2025 |
| 3085 | Quick Change | 70%(4570/6476) | Oct 21, 2025 |
| 3086 | Triangular Sums | 69%(5715/8179) | Oct 19, 2025 |
| 3087 | Shuffle'm Up | 44%(11640/26043) | Oct 23, 2025 |
| 3088 | Push Botton Lock | 62%(1063/1688) | Sep 10, 2025 |
| 3089 | Sign Message Formatting | 19%(22/112) | Apr 23, 2025 |
| 3090 | Visible Lattice Points | 58%(7426/12736) | Oct 27, 2025 |
| 3091 | Triangular N-Queens Problem | 43%(398/911) | Sep 1, 2025 |
| 3092 | Non-divisible 2-3 Power Sums | 46%(526/1126) | Oct 21, 2025 |
| 3093 | Margaritas on the River Walk | 38%(1275/3352) | Oct 18, 2025 |
| 3094 | Quicksum | 66%(14423/21745) | Oct 20, 2025 |
| 3095 | Linear Pachinko | 69%(1197/1716) | Oct 20, 2025 |
| 3096 | Surprising Strings | 59%(5743/9730) | Oct 17, 2025 |
| 3097 | Falling Ice | 26%(109/419) | Oct 18, 2025 |
| 3098 | Frugal Search | 46%(497/1076) | Oct 20, 2025 |
| 3099 | Go Go Gorelians | 54%(584/1078) | Nov 12, 2025 |
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