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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 |
| 3089 | Sign Message Formatting | 19%(22/112) | Apr 23, 2025 |
| 3031 | Jezzball | 34%(40/116) | Nov 24, 2025 |
| 3019 | Image Rotation | 29%(38/128) | Jul 30, 2020 |
| 3054 | High Spies | 26%(37/141) | Oct 19, 2025 |
| 3052 | Geodes | 30%(49/159) | Oct 20, 2025 |
| 3064 | Payment System | 35%(69/193) | May 30, 2025 |
| 3081 | Core Wars | 31%(68/219) | Apr 2, 2024 |
| 3059 | Rummikub | 34%(78/223) | Oct 21, 2025 |
| 3008 | Hexerpents of Hexwamp | 30%(102/335) | Oct 19, 2025 |
| 3024 | The Gossiping System | 36%(137/376) | Nov 24, 2025 |
| 3022 | The Uxuhul Voting System | 45%(179/392) | Nov 24, 2025 |
| 3011 | Secrets in Shadows | 22%(87/395) | Nov 7, 2021 |
| 3023 | Submarines | 42%(175/411) | Nov 20, 2025 |
| 3097 | Falling Ice | 26%(109/419) | Oct 18, 2025 |
| 3033 | Traveling Salesman | 37%(172/457) | Nov 24, 2025 |
| 3005 | Exploding CPU | 42%(232/545) | Oct 20, 2025 |
| 3001 | Gallup | 46%(276/589) | Dec 3, 2024 |
| 3058 | Decompression | 48%(293/610) | Jul 13, 2024 |
| 3043 | Walk the Talk | 41%(270/650) | Nov 17, 2025 |
| 3079 | Enigmatologically Cruciverbalistic | 19%(126/657) | Oct 21, 2025 |
| 3010 | The Genome Database of All Space Life | 29%(258/876) | Oct 19, 2025 |
| 3035 | Random Walking | 31%(281/889) | Nov 24, 2025 |
| 3021 | e-Coins | 48%(435/890) | Nov 20, 2025 |
| 3063 | Sherlock Holmes | 29%(259/891) | Oct 19, 2025 |
| 3091 | Triangular N-Queens Problem | 43%(399/912) | Nov 20, 2025 |
| 3027 | Base equality | 60%(560/924) | Nov 20, 2025 |
| 3029 | Tour Guide | 35%(341/948) | Oct 18, 2025 |
| 3053 | Bowling | 25%(245/949) | Oct 18, 2025 |
| 3066 | Maximum | 57%(549/950) | Oct 21, 2025 |
| 3082 | 'Roid Rage | 30%(303/984) | Nov 24, 2025 |
| 3028 | Shoot-out | 29%(317/1071) | Nov 24, 2025 |
| 3098 | Frugal Search | 46%(498/1077) | Nov 24, 2025 |
| 3099 | Go Go Gorelians | 54%(585/1079) | Nov 24, 2025 |
| 3073 | Spam | 56%(626/1114) | Nov 17, 2025 |
| 3092 | Non-divisible 2-3 Power Sums | 46%(526/1126) | Oct 21, 2025 |
| 3025 | Rings | 34%(407/1174) | Nov 20, 2025 |
| 3060 | Make it Manhattan | 40%(476/1179) | Nov 20, 2025 |
| 3000 | Frogger | 28%(338/1193) | Nov 24, 2025 |
| 3055 | Digital Friends | 45%(550/1196) | Nov 24, 2025 |
| 3056 | The Bavarian Beer Party | 38%(488/1284) | Nov 20, 2025 |
| 3016 | K-Monotonic | 34%(518/1489) | Nov 24, 2025 |
| 3015 | Expected Difference | 26%(399/1503) | Nov 24, 2025 |
| 3004 | Subway planning | 28%(432/1540) | Oct 18, 2025 |
| 3088 | Push Botton Lock | 62%(1064/1689) | Nov 20, 2025 |
| 3095 | Linear Pachinko | 69%(1197/1716) | Oct 20, 2025 |
| 3072 | Robot | 33%(613/1817) | Nov 24, 2025 |
| 3078 | Q | 68%(1283/1873) | Nov 20, 2025 |
| 3003 | Spiderman’s workout | 38%(767/1985) | Nov 24, 2025 |
| 3075 | Tic-Tac-Toe | 40%(920/2280) | Nov 24, 2025 |
| 3068 | "Shortest" pair of paths | 49%(1133/2286) | Nov 24, 2025 |
| 3084 | Panic Room | 51%(1224/2360) | Oct 21, 2025 |
| 3012 | A Number from Yanghui Triangle | 41%(1003/2415) | Nov 24, 2025 |
| 3049 | Securing the Barn | 62%(1526/2426) | Nov 24, 2025 |
| 3065 | Stargates | 22%(555/2457) | Oct 20, 2025 |
| 3047 | Bovine Birthday | 44%(1112/2514) | Nov 20, 2025 |
| 3038 | Flying Right | 33%(854/2585) | Oct 17, 2025 |
| 3036 | Honeycomb Walk | 66%(1789/2683) | Nov 20, 2025 |
| 3042 | Grazing on the Run | 41%(1223/2978) | Nov 24, 2025 |
| 3093 | Margaritas on the River Walk | 38%(1275/3352) | Oct 18, 2025 |
| 3039 | Close Encounter | 36%(1343/3630) | Nov 20, 2025 |
| 3044 | City Skyline | 43%(1701/3868) | Nov 24, 2025 |
| 3018 | Giftbox | 28%(1150/4067) | Nov 24, 2025 |
| 3034 | Whac-a-Mole | 29%(1299/4367) | Oct 18, 2025 |
| 3002 | Jackpot | 33%(1545/4651) | Nov 20, 2025 |
| 3032 | Card Trick | 68%(3549/5214) | Nov 24, 2025 |
| 3057 | Evacuation | 25%(1562/6027) | Nov 24, 2025 |
| 3085 | Quick Change | 70%(4571/6477) | Nov 20, 2025 |
| 3051 | Satellite Photographs | 45%(3062/6670) | Nov 20, 2025 |
| 3076 | Sudoku | 45%(3090/6758) | Nov 24, 2025 |
| 3014 | Cake Pieces and Plates | 31%(2208/6947) | Nov 20, 2025 |
| 3037 | Skiing | 25%(1835/7214) | Nov 24, 2025 |
| 3086 | Triangular Sums | 69%(5716/8180) | Nov 20, 2025 |
| 3077 | Rounders | 64%(5323/8261) | Nov 20, 2025 |
| 3007 | Organize Your Train part II | 28%(2711/9662) | Nov 20, 2025 |
| 3096 | Surprising Strings | 59%(5744/9731) | Nov 20, 2025 |
| 3050 | Hopscotch | 62%(6114/9786) | Nov 24, 2025 |
| 3048 | Max Factor | 36%(3837/10508) | Nov 20, 2025 |
| 3071 | Football | 41%(4695/11240) | Nov 24, 2025 |
| 3045 | Cow Acrobats | 36%(4099/11327) | Nov 22, 2025 |
| 3046 | Ant Counting | 37%(4460/11992) | Nov 20, 2025 |
| 3040 | Allowance | 42%(5214/12316) | Nov 15, 2025 |
| 3090 | Visible Lattice Points | 58%(7427/12737) | Nov 20, 2025 |
| 3020 | Antenna Placement | 48%(6640/13693) | Nov 24, 2025 |
| 3030 | Nasty Hacks | 69%(10038/14528) | Nov 20, 2025 |
| 3074 | Sudoku | 34%(5167/14870) | Nov 20, 2025 |
| 3017 | Cut the Sequence | 30%(4863/16022) | Nov 24, 2025 |
| 3062 | Celebrity jeopardy | 55%(9798/17497) | Nov 20, 2025 |
| 3083 | Children of the Candy Corn | 42%(7881/18691) | Nov 25, 2025 |
| 3094 | Quicksum | 66%(14425/21748) | Nov 24, 2025 |
| 3006 | Dirichlet's Theorem on Arithmetic Progressions | 48%(11615/23739) | Nov 23, 2025 |
| 3026 | Borg Maze | 31%(7867/25338) | Nov 24, 2025 |
| 3087 | Shuffle'm Up | 44%(11641/26049) | Nov 25, 2025 |
| 3080 | Blue Jeans | 43%(12153/27700) | Nov 24, 2025 |
| 3069 | Saruman's Army | 48%(14509/29623) | Nov 22, 2025 |
| 3013 | Big Christmas Tree | 21%(6624/30911) | Nov 24, 2025 |
| 3041 | Asteroids | 53%(18337/34549) | Nov 22, 2025 |
| 3070 | Fibonacci | 64%(22330/34718) | Nov 24, 2025 |
| 3067 | Japan | 26%(11075/41832) | Nov 24, 2025 |
| 3009 | Curling 2.0 | 40%(17634/43132) | Nov 25, 2025 |
| 3061 | Subsequence | 38%(23394/61549) | Nov 25, 2025 |
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