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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 |
| 1800 | Magic Trick | 21%(190/872) | 2017-12-25 |
| 1801 | Formula Racing | 26%(79/299) | 2018-6-2 |
| 1802 | Ancient Plates | 13%(40/287) | 2018-6-2 |
| 1803 | Box Art | 13%(138/1050) | 2018-6-2 |
| 1804 | Brainman | 50%(6094/12015) | 2018-6-22 |
| 1805 | Friends | 23%(163/700) | 2018-6-1 |
| 1806 | Manhattan 2025 | 46%(1141/2474) | 2018-6-14 |
| 1807 | Mayan Dates | 29%(44/148) | 2018-6-2 |
| 1808 | Quadratic Residues | 33%(580/1720) | 2018-6-2 |
| 1809 | Regetni | 37%(719/1906) | 2018-6-2 |
| 1810 | Covering | 16%(166/1017) | 2018-5-18 |
| 1811 | Prime Test | 26%(10052/37477) | 2018-6-22 |
| 1812 | Zuma Game | 20%(114/567) | 2018-6-2 |
| 1813 | Overlapped Shapes | 28%(176/619) | 2018-6-2 |
| 1814 | Polynomial | 6%(26/394) | 2018-6-2 |
| 1815 | Friendship | 27%(3136/11265) | 2018-6-2 |
| 1816 | Wild Words | 26%(1501/5631) | 2018-6-2 |
| 1817 | Traffic Jam | 48%(144/299) | 2018-6-2 |
| 1818 | ATP | 39%(362/910) | 2018-5-14 |
| 1819 | Disks | 24%(424/1731) | 2018-6-7 |
| 1820 | Expression | 0%(22/2327) | 2017-12-25 |
| 1821 | Fence | 31%(1801/5630) | 2018-6-23 |
| 1822 | Fence2 | 41%(141/341) | 2018-5-25 |
| 1823 | Hotel | 43%(1272/2927) | 2018-6-11 |
| 1824 | TwoFour | 33%(77/231) | 2017-12-25 |
| 1825 | Young | 27%(142/517) | 2018-5-6 |
| 1826 | The Best Farm | 29%(634/2117) | 2018-5-7 |
| 1827 | A Bunch Of Monsters | 38%(392/1016) | 2018-1-1 |
| 1828 | Monkeys' Pride | 33%(3075/9223) | 2018-5-19 |
| 1829 | 火力防御网 | 26%(64/246) | 2018-3-30 |
| 1830 | 开关问题 | 40%(4013/10018) | 2018-6-22 |
| 1831 | 不定方程组 | 30%(247/819) | 2018-6-6 |
| 1832 | 连环锁 | 32%(435/1338) | 2018-6-15 |
| 1833 | 排列 | 37%(8039/21214) | 2018-6-24 |
| 1834 | 线段处理 | 12%(90/724) | 2018-3-27 |
| 1835 | 宇航员 | 42%(2953/6928) | 2018-6-13 |
| 1836 | Alignment | 32%(5994/18275) | 2018-6-17 |
| 1837 | Balance | 62%(10138/16115) | 2018-6-24 |
| 1838 | Banana | 36%(884/2413) | 2018-5-20 |
| 1839 | Cattle | 15%(48/301) | 2017-12-25 |
| 1840 | Eqs | 49%(8618/17545) | 2018-6-23 |
| 1841 | Meadow | 17%(101/574) | 2018-5-18 |
| 1842 | Parking | 23%(43/185) | 2018-6-6 |
| 1843 | Shire | 15%(20/133) | 2017-12-25 |
| 1844 | Sum | 65%(7233/11035) | 2018-6-24 |
| 1845 | Sumdiv | 24%(6432/26044) | 2018-6-23 |
| 1846 | System | 29%(110/378) | 2018-5-18 |
| 1847 | Tram | 37%(6760/18158) | 2018-6-19 |
| 1848 | Tree | 35%(1415/4006) | 2018-6-22 |
| 1849 | Two | 53%(1007/1865) | 2018-6-6 |
| 1850 | Code | 48%(4947/10284) | 2018-6-20 |
| 1851 | Map | 21%(155/717) | 2017-12-25 |
| 1852 | Ants | 40%(9372/23208) | 2018-6-20 |
| 1853 | Cat | 25%(498/1950) | 2018-5-14 |
| 1854 | Evil Straw Warts Live | 29%(339/1163) | 2018-6-6 |
| 1855 | Mint | 34%(587/1685) | 2018-5-17 |
| 1856 | Sea Battle | 35%(1163/3267) | 2018-6-5 |
| 1857 | To Europe! To Europe! | 33%(348/1038) | 2018-6-9 |
| 1858 | Interesting Maze Game | 27%(99/356) | 2018-3-11 |
| 1859 | The Perfect Symmetry | 38%(537/1390) | 2017-12-30 |
| 1860 | Currency Exchange | 38%(13529/35273) | 2018-6-23 |
| 1861 | Network | 40%(7206/17853) | 2018-6-22 |
| 1862 | Stripies | 44%(8708/19475) | 2018-6-20 |
| 1863 | Subnumber | 11%(114/1013) | 2018-4-5 |
| 1864 | Funny Card Game | 12%(18/145) | 2017-11-11 |
| 1865 | Practice | 53%(82/153) | 2017-11-11 |
| 1866 | Help! | 28%(105/370) | 2018-5-27 |
| 1867 | Treequivalence | 27%(104/385) | 2017-12-25 |
| 1868 | Antiarithmetic? | 50%(719/1430) | 2018-6-1 |
| 1869 | Test | 45%(126/276) | 2018-2-25 |
| 1870 | Bee Breeding | 41%(752/1791) | 2018-2-3 |
| 1871 | Bullet Hole | 6%(22/361) | 2017-12-25 |
| 1872 | A Dicey Problem | 32%(334/1018) | 2018-6-15 |
| 1873 | The Fortified Forest | 27%(1974/7097) | 2018-6-22 |
| 1874 | Trade on Verweggistan | 28%(548/1911) | 2018-5-15 |
| 1875 | Robot | 25%(61/243) | 2017-12-25 |
| 1876 | The Letter Carrier's Rounds | 30%(113/366) | 2018-6-17 |
| 1877 | Flooded! | 29%(1994/6776) | 2018-6-21 |
| 1878 | Jill's Bike | 25%(362/1417) | 2017-12-25 |
| 1879 | Tempus et mobilius Time and motion | 59%(512/866) | 2018-5-2 |
| 1880 | Variable Radix Huffman Encoding | 28%(257/916) | 2018-4-24 |
| 1881 | Sail Race | 21%(19/89) | 2017-12-25 |
| 1882 | Stamps | 34%(560/1644) | 2018-6-1 |
| 1883 | Theseus and the Minotaur | 11%(28/235) | 2018-5-5 |
| 1884 | Train Time | 9%(40/444) | 2018-6-1 |
| 1885 | Uncompress | 34%(333/964) | 2018-5-26 |
| 1886 | Borrowers | 23%(369/1541) | 2018-5-24 |
| 1887 | Testing the CATCHER | 36%(6888/18793) | 2018-6-15 |
| 1888 | Crossword Answers | 42%(579/1365) | 2018-5-28 |
| 1889 | Package Pricing | 10%(53/489) | 2017-12-25 |
| 1890 | Switching Channels | 52%(241/455) | 2018-5-14 |
| 1891 | Typesetting | 11%(35/311) | 2017-12-25 |
| 1892 | VTAS - Vessel Traffic Advisory Service | 1%(3/175) | 2017-12-25 |
| 1893 | Monitoring Wheelchair Patients | 18%(78/432) | 2018-3-15 |
| 1894 | Alternative Scale of Notation | 37%(814/2191) | 2018-5-28 |
| 1895 | Bring Them There | 26%(224/856) | 2018-5-17 |
| 1896 | Code Formatting | 34%(536/1534) | 2018-6-10 |
| 1897 | Data Mining | 27%(105/382) | 2018-4-22 |
| 1898 | Entropy | 22%(215/939) | 2017-12-25 |
| 1899 | Farmer Bill's Problem | 26%(653/2495) | 2018-6-10 |
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