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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 |
| 3100 | Root of the Problem | 52%(6837/12953) | Feb 21, 2025 |
| 3101 | Astronomy | 23%(1672/7240) | May 12, 2025 |
| 3102 | Bee Garden | 24%(294/1215) | May 25, 2025 |
| 3103 | Cutting a Block | 50%(739/1472) | Dec 29, 2024 |
| 3104 | Drying | 23%(12143/51214) | Aug 24, 2025 |
| 3105 | Expectation | 47%(588/1228) | Feb 22, 2025 |
| 3106 | Flip and Turn | 26%(505/1922) | May 8, 2025 |
| 3107 | Godfather | 32%(5370/16679) | Aug 24, 2025 |
| 3108 | Horn Clauses | 17%(76/438) | Jul 14, 2024 |
| 3109 | Inner Vertices | 29%(1172/3963) | May 31, 2025 |
| 3110 | Jenny's First Exam | 22%(261/1155) | May 4, 2025 |
| 3111 | K Best | 24%(5144/21228) | Aug 24, 2025 |
| 3112 | Digital Biochemist Circuit | 42%(425/1004) | Jul 14, 2024 |
| 3113 | The Halting Problem | 15%(32/212) | Apr 2, 2023 |
| 3114 | Countries in War | 28%(1674/5918) | Jul 23, 2025 |
| 3115 | Energy × Delay | 41%(144/348) | Jul 17, 2024 |
| 3116 | MegaCheckers | 27%(45/164) | Oct 12, 2022 |
| 3117 | World Cup | 49%(4951/9966) | Mar 13, 2025 |
| 3118 | Critical Route | 32%(97/295) | Dec 28, 2024 |
| 3119 | Friends or Enemies? | 43%(202/460) | Jul 29, 2024 |
| 3120 | Sudoku | 38%(160/418) | Nov 24, 2024 |
| 3121 | The SetStack Computer | 13%(261/1868) | Nov 23, 2024 |
| 3122 | Pie | 28%(13695/48633) | Aug 17, 2025 |
| 3123 | Ticket to Ride | 42%(441/1044) | Nov 23, 2024 |
| 3124 | The Bookcase | 32%(748/2317) | Nov 23, 2024 |
| 3125 | Printer Queue | 50%(3712/7337) | Jul 27, 2025 |
| 3126 | Prime Path | 50%(28075/55609) | Aug 19, 2025 |
| 3127 | Lineland's Airport | 31%(71/223) | Dec 9, 2024 |
| 3128 | Leonardo's Notebook | 41%(1201/2869) | May 23, 2025 |
| 3129 | How I Wonder What You Are! | 69%(825/1188) | Aug 1, 2025 |
| 3130 | How I Mathematician Wonder What You Are! | 53%(2868/5364) | Aug 1, 2025 |
| 3131 | Cubic Eight-Puzzle | 33%(688/2072) | May 27, 2025 |
| 3132 | Sum of Different Primes | 60%(2366/3903) | Aug 18, 2025 |
| 3133 | Manhattan Wiring | 55%(1281/2300) | May 27, 2025 |
| 3134 | Power Calculus | 54%(2610/4765) | Aug 18, 2025 |
| 3135 | Polygons on the Grid | 31%(241/765) | Sep 19, 2024 |
| 3136 | The Best Name for Your Baby | 27%(98/361) | May 27, 2025 |
| 3137 | Enjoyable Commutation | 23%(269/1131) | Aug 12, 2024 |
| 3138 | ACM Team Selection | 49%(1038/2092) | May 27, 2025 |
| 3139 | Balancing the Scale | 39%(710/1809) | May 27, 2025 |
| 3140 | Contestants Division | 26%(3914/14548) | Aug 24, 2025 |
| 3141 | Distant Galaxy | 31%(689/2174) | May 9, 2025 |
| 3142 | Escape Plan | 11%(81/716) | Jun 9, 2023 |
| 3143 | False Perceptions | 9%(22/239) | Jan 22, 2021 |
| 3144 | Guarding Zion | 9%(28/283) | Jun 14, 2021 |
| 3145 | Harmony Forever | 24%(1499/6231) | Sep 23, 2024 |
| 3146 | Interesting Yang Hui Triangle | 49%(949/1908) | Jul 22, 2024 |
| 3147 | John's Canonical Difference Bound Matrices | 14%(115/782) | Jan 29, 2021 |
| 3148 | ASCII Art | 30%(250/817) | Jul 19, 2024 |
| 3149 | Billing Tables | 25%(125/497) | Mar 22, 2023 |
| 3150 | Cellular Automaton | 40%(1831/4518) | Feb 10, 2025 |
| 3151 | Driving Directions | 27%(86/310) | Jul 17, 2023 |
| 3152 | Exchange | 22%(86/384) | Nov 14, 2024 |
| 3153 | Fool's Game | 19%(34/172) | Jul 21, 2024 |
| 3154 | Graveyard | 45%(1084/2387) | May 29, 2025 |
| 3155 | Hard Life | 28%(3391/11712) | Jun 21, 2025 |
| 3156 | Interconnect | 31%(479/1532) | Sep 6, 2023 |
| 3157 | Java vs C++ | 27%(2256/8172) | Feb 8, 2025 |
| 3158 | Kickdown | 40%(1043/2585) | May 29, 2025 |
| 3159 | Candies | 28%(14667/51973) | Aug 12, 2025 |
| 3160 | Father Christmas flymouse | 31%(1569/5021) | Jul 23, 2025 |
| 3161 | Numerical Integration | 1%(6/558) | Jan 11, 2025 |
| 3162 | Walking Race | 25%(1541/6095) | Jun 11, 2025 |
| 3163 | King of Fighters | 17%(256/1448) | Dec 24, 2024 |
| 3164 | Command Network | 27%(6804/24362) | Aug 19, 2025 |
| 3165 | Traveling Trio | 18%(83/457) | May 22, 2023 |
| 3166 | Jumping Frog | 25%(129/506) | Nov 29, 2024 |
| 3167 | Cow Patterns | 32%(2111/6425) | Jul 26, 2025 |
| 3168 | Barn Expansion | 26%(800/3038) | Aug 4, 2025 |
| 3169 | Layout | 47%(11022/23047) | Aug 20, 2025 |
| 3170 | Knights of Ni | 38%(1160/2998) | Oct 31, 2024 |
| 3171 | Cleaning Shifts | 34%(2093/5985) | Aug 4, 2025 |
| 3172 | Scales | 27%(979/3594) | Sep 29, 2024 |
| 3173 | Parkside's Triangle | 61%(4970/8108) | Dec 7, 2024 |
| 3174 | Alignment of the Planets | 47%(1034/2188) | May 19, 2025 |
| 3175 | Finding Bovine Roots | 21%(1018/4811) | May 19, 2025 |
| 3176 | Cow Bowling | 65%(19283/29665) | Aug 17, 2025 |
| 3177 | Redundant Paths | 40%(10160/24958) | Aug 18, 2025 |
| 3178 | Roping the Field | 29%(383/1299) | May 19, 2025 |
| 3179 | Corral the Cows | 40%(1358/3333) | Aug 24, 2025 |
| 3180 | The Cow Prom | 55%(2267/4054) | Jul 26, 2025 |
| 3181 | Dollar Dayz | 36%(5358/14678) | Aug 19, 2025 |
| 3182 | The Grove | 47%(569/1209) | May 19, 2025 |
| 3183 | Stump Removal | 51%(2040/3993) | May 19, 2025 |
| 3184 | Finicky Grazers | 28%(523/1845) | May 19, 2025 |
| 3185 | The Water Bowls | 38%(3699/9514) | May 6, 2025 |
| 3186 | Treats for the Cows | 51%(6803/13215) | Aug 12, 2025 |
| 3187 | Backward Digit Sums | 55%(7794/14084) | Aug 24, 2025 |
| 3188 | Cellphones | 34%(348/1011) | Jun 7, 2024 |
| 3189 | Steady Cow Assignment | 34%(3020/8713) | Jul 30, 2025 |
| 3190 | Stall Reservations | 33%(8652/26082) | Aug 11, 2025 |
| 3191 | The Moronic Cowmpouter | 51%(2422/4743) | Jul 23, 2025 |
| 3192 | DNA Assembly | 42%(931/2196) | May 25, 2025 |
| 3193 | Cow Phrasebook | 33%(1141/3398) | Mar 12, 2025 |
| 3194 | Equidivisions | 57%(1825/3169) | Aug 8, 2024 |
| 3195 | Generalized Matrioshkas | 29%(678/2276) | Aug 14, 2024 |
| 3196 | Babylonian Roulette | 58%(341/582) | May 26, 2025 |
| 3197 | Continuous Fractions | 36%(409/1125) | Oct 23, 2024 |
| 3198 | Polygon Encoder | 17%(123/719) | Jun 4, 2025 |
| 3199 | Uncle Jack | 42%(2056/4864) | May 25, 2025 |
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