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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 |
| 2123 | Artinals | 11%(36/308) | Oct 16, 2025 |
| 2130 | Jogging | 10%(47/459) | Oct 16, 2025 |
| 2120 | Herbalists | 35%(61/174) | Oct 16, 2025 |
| 2150 | Crossing Prisms | 27%(62/223) | Oct 23, 2025 |
| 2147 | Dice Puzzle | 37%(111/300) | Oct 16, 2025 |
| 2113 | Agents | 22%(121/527) | Oct 16, 2025 |
| 2107 | Gear Profiles | 27%(122/439) | Oct 16, 2025 |
| 2198 | Boundaries on | 29%(127/436) | Oct 16, 2025 |
| 2129 | Invariant Polynomials | 38%(132/347) | Oct 16, 2025 |
| 2158 | A Difficult Mathematics Problem | 34%(140/406) | Oct 16, 2025 |
| 2149 | Inherit the Spheres | 33%(152/453) | Oct 16, 2025 |
| 2177 | Ghost Busters | 46%(155/333) | Oct 16, 2025 |
| 2145 | Pathological Paths | 53%(166/308) | Oct 16, 2025 |
| 2134 | Traffic Lights | 20%(170/822) | Oct 21, 2025 |
| 2162 | Document Indexing | 19%(179/929) | Oct 16, 2025 |
| 2164 | Find the Border | 24%(181/734) | Oct 21, 2025 |
| 2156 | National Day Celebration | 39%(206/528) | Oct 16, 2025 |
| 2124 | Crankshaft | 23%(217/930) | Oct 16, 2025 |
| 2170 | Lattice Animals | 24%(237/964) | Oct 16, 2025 |
| 2178 | Heroes Of Might And Magic | 22%(240/1050) | Oct 21, 2025 |
| 2108 | Lazy Pianist | 16%(244/1507) | Oct 16, 2025 |
| 2102 | Incredible! Impossible! | 29%(256/882) | Oct 16, 2025 |
| 2103 | Jackpot | 21%(259/1225) | Oct 23, 2025 |
| 2148 | Color the Map | 29%(268/906) | Oct 16, 2025 |
| 2122 | Japan Plotter Driver | 40%(295/725) | Oct 16, 2025 |
| 2169 | Kingdom of Magic | 26%(301/1127) | Oct 16, 2025 |
| 2119 | God of the Vile Baskers | 30%(326/1083) | Oct 16, 2025 |
| 2143 | Make a Sequence | 58%(331/566) | Oct 16, 2025 |
| 2144 | Leaky Cryptography | 65%(342/520) | Oct 16, 2025 |
| 2168 | Joke with Turtles | 27%(379/1385) | Oct 16, 2025 |
| 2173 | Cricket Field | 38%(382/986) | Oct 21, 2025 |
| 2180 | Bale Figures | 45%(409/894) | Oct 19, 2025 |
| 2146 | Confusing Login Names | 33%(424/1251) | Oct 16, 2025 |
| 2172 | Bricks | 29%(427/1458) | Oct 19, 2025 |
| 2197 | Jill's Tour Paths | 29%(501/1715) | Oct 18, 2025 |
| 2161 | Chandelier | 37%(504/1349) | Oct 16, 2025 |
| 2171 | Amusing Numbers | 39%(515/1314) | Oct 19, 2025 |
| 2133 | Cow Imposters | 26%(521/1957) | Oct 16, 2025 |
| 2165 | Gunman | 36%(533/1459) | Oct 21, 2025 |
| 2174 | Decoding Task | 43%(547/1256) | Oct 20, 2025 |
| 2118 | Firepersons | 41%(591/1426) | Oct 16, 2025 |
| 2131 | Key Insertion | 23%(592/2533) | Oct 16, 2025 |
| 2132 | Cow Math | 33%(678/2044) | Oct 16, 2025 |
| 2199 | Rate of Return | 39%(679/1704) | Oct 25, 2025 |
| 2167 | Irrelevant Elements | 24%(689/2793) | Oct 16, 2025 |
| 2189 | Romeo Meets Juliet | 45%(738/1636) | Oct 18, 2025 |
| 2166 | Heapsort | 50%(793/1569) | Oct 16, 2025 |
| 2176 | Folding | 33%(805/2412) | Oct 19, 2025 |
| 2194 | Stacking Cylinders | 49%(832/1694) | Oct 18, 2025 |
| 2111 | Millenium Leapcow | 36%(870/2379) | Oct 16, 2025 |
| 2188 | Cow Laundry | 62%(952/1513) | Oct 16, 2025 |
| 2116 | Death to Binary? | 32%(959/2995) | Oct 16, 2025 |
| 2193 | Lenny's Lucky Lotto Lists | 43%(1006/2308) | Oct 20, 2025 |
| 2179 | Inlay Cutters | 41%(1020/2434) | Oct 16, 2025 |
| 2163 | Easy Trading | 43%(1154/2683) | Oct 16, 2025 |
| 2128 | Highways | 38%(1187/3116) | Oct 16, 2025 |
| 2137 | Cowties | 34%(1252/3661) | Oct 16, 2025 |
| 2191 | Mersenne Composite Numbers | 46%(1257/2720) | Oct 18, 2025 |
| 2152 | Fire | 51%(1483/2854) | Oct 16, 2025 |
| 2126 | Factoring a Polynomial | 50%(1527/3009) | Oct 20, 2025 |
| 2157 | Maze | 31%(1549/4949) | Oct 16, 2025 |
| 2160 | Box | 36%(1607/4458) | Oct 16, 2025 |
| 2114 | Boatherds | 32%(1641/5071) | Oct 16, 2025 |
| 2138 | Travel Games | 35%(1667/4685) | Oct 16, 2025 |
| 2110 | Mountain Walking | 31%(1855/5889) | Oct 16, 2025 |
| 2101 | Honey and Milk Land | 54%(1891/3475) | Oct 16, 2025 |
| 2175 | Evacuation Plan | 25%(1920/7607) | Oct 19, 2025 |
| 2183 | Bovine Math Geniuses | 59%(2246/3789) | Oct 26, 2025 |
| 2117 | Electricity | 30%(2607/8512) | Oct 16, 2025 |
| 2106 | Boolean Expressions | 34%(2701/7846) | Oct 16, 2025 |
| 2125 | Destroying The Graph | 32%(3054/9454) | Oct 16, 2025 |
| 2121 | Inglish-Number Translator | 39%(3356/8548) | Oct 16, 2025 |
| 2127 | Greatest Common Increasing Subsequence | 25%(3759/14834) | Oct 16, 2025 |
| 2153 | Rank List | 33%(4190/12560) | Oct 16, 2025 |
| 2100 | Graveyard Design | 25%(4413/17302) | Oct 16, 2025 |
| 2154 | Color | 31%(4477/14394) | Oct 16, 2025 |
| 2151 | Check the difficulty of problems | 41%(4518/11015) | Oct 19, 2025 |
| 2181 | Jumping Cows | 58%(5134/8706) | Oct 17, 2025 |
| 2185 | Milking Grid | 43%(5271/12235) | Oct 21, 2025 |
| 2142 | The Balance | 42%(5447/12695) | Oct 16, 2025 |
| 2139 | Six Degrees of Cowvin Bacon | 47%(5724/12069) | Oct 17, 2025 |
| 2190 | ISBN | 34%(6002/17153) | Oct 18, 2025 |
| 2192 | Zipper | 36%(7484/20783) | Oct 27, 2025 |
| 2141 | Message Decowding | 55%(7920/14324) | Oct 27, 2025 |
| 2112 | Optimal Milking | 35%(8317/23504) | Oct 16, 2025 |
| 2184 | Cow Exhibition | 40%(8389/20608) | Oct 20, 2025 |
| 2135 | Farm Tour | 38%(9343/24536) | Oct 16, 2025 |
| 2136 | Vertical Histogram | 46%(10471/22333) | Oct 16, 2025 |
| 2196 | Specialized Four-Digit Numbers | 66%(10555/15758) | Oct 18, 2025 |
| 2140 | Herd Sums | 57%(11746/20456) | Oct 21, 2025 |
| 2105 | IP Address | 56%(12218/21520) | Oct 16, 2025 |
| 2182 | Lost Cows | 60%(12424/20543) | Oct 20, 2025 |
| 2115 | C Looooops | 29%(12584/42655) | Oct 16, 2025 |
| 2159 | Ancient Cipher | 32%(13665/42226) | Oct 22, 2025 |
| 2155 | Matrix | 35%(14774/42012) | Oct 16, 2025 |
| 2187 | Beauty Contest | 30%(15580/51199) | Oct 21, 2025 |
| 2109 | Power of Cryptography | 49%(15663/31476) | Oct 16, 2025 |
| 2195 | Going Home | 49%(15728/32092) | Oct 21, 2025 |
| 2186 | Popular Cows | 40%(20272/49882) | Oct 19, 2025 |
| 2104 | K-th Number | 36%(31638/87629) | Oct 16, 2025 |
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