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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 |
| 3161 | Numerical Integration | 1%(6/559) | Oct 19, 2025 |
| 3143 | False Perceptions | 9%(22/241) | Oct 18, 2025 |
| 3144 | Guarding Zion | 9%(28/290) | Oct 19, 2025 |
| 3142 | Escape Plan | 11%(83/720) | Oct 18, 2025 |
| 3121 | The SetStack Computer | 13%(261/1869) | Oct 19, 2025 |
| 3147 | John's Canonical Difference Bound Matrices | 14%(115/783) | Oct 20, 2025 |
| 3113 | The Halting Problem | 15%(32/212) | Apr 2, 2023 |
| 3198 | Polygon Encoder | 17%(124/720) | Sep 1, 2025 |
| 3108 | Horn Clauses | 17%(76/440) | Nov 24, 2025 |
| 3163 | King of Fighters | 17%(256/1451) | Nov 24, 2025 |
| 3165 | Traveling Trio | 18%(83/459) | Nov 24, 2025 |
| 3153 | Fool's Game | 19%(34/174) | Nov 17, 2025 |
| 3175 | Finding Bovine Roots | 21%(1019/4812) | Oct 23, 2025 |
| 3152 | Exchange | 22%(87/387) | Oct 20, 2025 |
| 3110 | Jenny's First Exam | 22%(262/1158) | Oct 18, 2025 |
| 3101 | Astronomy | 23%(1672/7243) | Nov 24, 2025 |
| 3104 | Drying | 23%(12153/51266) | Nov 24, 2025 |
| 3137 | Enjoyable Commutation | 23%(269/1132) | Oct 19, 2025 |
| 3145 | Harmony Forever | 24%(1501/6235) | Nov 24, 2025 |
| 3111 | K Best | 24%(5148/21239) | Nov 24, 2025 |
| 3102 | Bee Garden | 24%(296/1217) | Nov 12, 2025 |
| 3149 | Billing Tables | 25%(125/497) | Mar 22, 2023 |
| 3162 | Walking Race | 25%(1542/6097) | Nov 24, 2025 |
| 3166 | Jumping Frog | 25%(129/507) | Oct 18, 2025 |
| 3106 | Flip and Turn | 26%(507/1924) | Nov 24, 2025 |
| 3168 | Barn Expansion | 26%(802/3040) | Nov 24, 2025 |
| 3140 | Contestants Division | 26%(3914/14551) | Nov 24, 2025 |
| 3136 | The Best Name for Your Baby | 27%(98/362) | Oct 19, 2025 |
| 3116 | MegaCheckers | 27%(45/166) | Nov 24, 2025 |
| 3172 | Scales | 27%(981/3598) | Nov 24, 2025 |
| 3157 | Java vs C++ | 27%(2259/8175) | Oct 20, 2025 |
| 3164 | Command Network | 27%(6807/24382) | Nov 24, 2025 |
| 3122 | Pie | 28%(13743/48865) | Nov 25, 2025 |
| 3159 | Candies | 28%(14672/51987) | Nov 24, 2025 |
| 3114 | Countries in War | 28%(1678/5925) | Nov 20, 2025 |
| 3151 | Driving Directions | 28%(89/314) | Nov 17, 2025 |
| 3184 | Finicky Grazers | 28%(524/1848) | Nov 24, 2025 |
| 3155 | Hard Life | 28%(3394/11723) | Nov 24, 2025 |
| 3178 | Roping the Field | 29%(383/1301) | Nov 24, 2025 |
| 3109 | Inner Vertices | 29%(1174/3966) | Oct 18, 2025 |
| 3195 | Generalized Matrioshkas | 29%(679/2279) | Nov 24, 2025 |
| 3148 | ASCII Art | 30%(250/825) | Nov 24, 2025 |
| 3160 | Father Christmas flymouse | 31%(1571/5025) | Nov 24, 2025 |
| 3156 | Interconnect | 31%(481/1535) | Sep 5, 2025 |
| 3135 | Polygons on the Grid | 31%(242/769) | Oct 21, 2025 |
| 3141 | Distant Galaxy | 31%(691/2177) | Nov 24, 2025 |
| 3107 | Godfather | 31%(5418/17016) | Nov 24, 2025 |
| 3127 | Lineland's Airport | 32%(72/224) | Sep 2, 2025 |
| 3124 | The Bookcase | 32%(749/2319) | Oct 23, 2025 |
| 3118 | Critical Route | 32%(97/296) | Oct 19, 2025 |
| 3167 | Cow Patterns | 32%(2113/6429) | Oct 20, 2025 |
| 3190 | Stall Reservations | 33%(8802/26649) | Nov 20, 2025 |
| 3131 | Cubic Eight-Puzzle | 33%(688/2073) | Oct 18, 2025 |
| 3193 | Cow Phrasebook | 33%(1142/3401) | Nov 24, 2025 |
| 3188 | Cellphones | 34%(349/1013) | Oct 19, 2025 |
| 3189 | Steady Cow Assignment | 34%(3022/8718) | Nov 24, 2025 |
| 3171 | Cleaning Shifts | 34%(2094/5987) | Oct 19, 2025 |
| 3197 | Continuous Fractions | 36%(410/1126) | Nov 17, 2025 |
| 3181 | Dollar Dayz | 36%(5365/14688) | Nov 20, 2025 |
| 3120 | Sudoku | 38%(160/419) | Oct 20, 2025 |
| 3170 | Knights of Ni | 38%(1163/3003) | Nov 24, 2025 |
| 3185 | The Water Bowls | 38%(3706/9532) | Nov 20, 2025 |
| 3139 | Balancing the Scale | 39%(711/1815) | Oct 20, 2025 |
| 3115 | Energy × Delay | 40%(144/359) | Nov 24, 2025 |
| 3158 | Kickdown | 40%(1046/2589) | Nov 24, 2025 |
| 3150 | Cellular Automaton | 40%(1834/4521) | Nov 20, 2025 |
| 3179 | Corral the Cows | 40%(1362/3349) | Nov 20, 2025 |
| 3177 | Redundant Paths | 40%(10169/24990) | Nov 24, 2025 |
| 3128 | Leonardo's Notebook | 41%(1203/2871) | Nov 20, 2025 |
| 3112 | Digital Biochemist Circuit | 42%(425/1006) | Nov 24, 2025 |
| 3123 | Ticket to Ride | 42%(442/1045) | Oct 21, 2025 |
| 3199 | Uncle Jack | 42%(2059/4867) | Nov 24, 2025 |
| 3192 | DNA Assembly | 42%(934/2199) | Nov 20, 2025 |
| 3119 | Friends or Enemies? | 43%(203/462) | Oct 18, 2025 |
| 3154 | Graveyard | 45%(1086/2389) | Nov 24, 2025 |
| 3182 | The Grove | 46%(571/1215) | Oct 20, 2025 |
| 3174 | Alignment of the Planets | 47%(1037/2191) | Nov 20, 2025 |
| 3169 | Layout | 47%(11033/23083) | Nov 25, 2025 |
| 3105 | Expectation | 48%(592/1233) | Nov 24, 2025 |
| 3138 | ACM Team Selection | 49%(1040/2095) | Nov 24, 2025 |
| 3117 | World Cup | 49%(4955/9973) | Nov 20, 2025 |
| 3146 | Interesting Yang Hui Triangle | 49%(952/1912) | Nov 24, 2025 |
| 3103 | Cutting a Block | 50%(742/1475) | Nov 20, 2025 |
| 3126 | Prime Path | 50%(28102/55698) | Nov 21, 2025 |
| 3125 | Printer Queue | 50%(3719/7350) | Nov 23, 2025 |
| 3183 | Stump Removal | 51%(2041/3995) | Nov 17, 2025 |
| 3191 | The Moronic Cowmpouter | 51%(2425/4746) | Nov 20, 2025 |
| 3186 | Treats for the Cows | 51%(6810/13223) | Nov 20, 2025 |
| 3100 | Root of the Problem | 52%(6838/12958) | Nov 24, 2025 |
| 3130 | How I Mathematician Wonder What You Are! | 53%(2872/5375) | Nov 24, 2025 |
| 3134 | Power Calculus | 54%(2616/4777) | Oct 21, 2025 |
| 3187 | Backward Digit Sums | 55%(7800/14095) | Nov 20, 2025 |
| 3133 | Manhattan Wiring | 55%(1281/2306) | Oct 21, 2025 |
| 3180 | The Cow Prom | 55%(2271/4060) | Nov 24, 2025 |
| 3194 | Equidivisions | 57%(1827/3171) | Nov 20, 2025 |
| 3196 | Babylonian Roulette | 58%(344/586) | Nov 24, 2025 |
| 3132 | Sum of Different Primes | 60%(2368/3905) | Nov 20, 2025 |
| 3173 | Parkside's Triangle | 61%(4972/8112) | Nov 24, 2025 |
| 3176 | Cow Bowling | 65%(19292/29675) | Nov 23, 2025 |
| 3129 | How I Wonder What You Are! | 69%(828/1197) | Nov 24, 2025 |
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