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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 | 22%(190/837) | 2017-9-8 |
| 1801 | Formula Racing | 28%(63/222) | 2017-7-22 |
| 1802 | Ancient Plates | 15%(40/263) | 2017-7-22 |
| 1803 | Box Art | 14%(136/931) | 2017-4-2 |
| 1804 | Brainman | 51%(5690/11029) | 2017-9-20 |
| 1805 | Friends | 26%(161/616) | 2017-7-22 |
| 1806 | Manhattan 2025 | 46%(1091/2347) | 2017-9-21 |
| 1807 | Mayan Dates | 38%(44/113) | 2017-7-22 |
| 1808 | Quadratic Residues | 33%(559/1652) | 2017-9-17 |
| 1809 | Regetni | 38%(701/1843) | 2017-8-16 |
| 1810 | Covering | 16%(166/984) | 2017-7-22 |
| 1811 | Prime Test | 26%(9538/35701) | 2017-9-21 |
| 1812 | Zuma Game | 22%(113/502) | 2017-7-22 |
| 1813 | Overlapped Shapes | 30%(176/583) | 2017-7-22 |
| 1814 | Polynomial | 8%(26/305) | 2017-7-22 |
| 1815 | Friendship | 27%(3070/11028) | 2017-9-20 |
| 1816 | Wild Words | 26%(1444/5498) | 2017-9-21 |
| 1817 | Traffic Jam | 47%(139/290) | 2017-7-22 |
| 1818 | ATP | 39%(354/892) | 2017-7-22 |
| 1819 | Disks | 24%(409/1689) | 2017-9-1 |
| 1820 | Expression | 0%(22/2316) | 2017-7-22 |
| 1821 | Fence | 31%(1630/5142) | 2017-9-20 |
| 1822 | Fence2 | 41%(138/330) | 2017-7-22 |
| 1823 | Hotel | 44%(1234/2798) | 2017-9-19 |
| 1824 | TwoFour | 37%(77/203) | 2017-7-22 |
| 1825 | Young | 29%(136/457) | 2017-9-21 |
| 1826 | The Best Farm | 29%(628/2098) | 2017-7-22 |
| 1827 | A Bunch Of Monsters | 38%(390/1007) | 2017-8-3 |
| 1828 | Monkeys' Pride | 33%(3041/9146) | 2017-9-17 |
| 1829 | 火力防御网 | 30%(64/208) | 2017-7-22 |
| 1830 | 开关问题 | 40%(3670/9166) | 2017-9-21 |
| 1831 | 不定方程组 | 31%(245/776) | 2017-8-15 |
| 1832 | 连环锁 | 32%(427/1305) | 2017-8-14 |
| 1833 | 排列 | 38%(7776/20272) | 2017-9-21 |
| 1834 | 线段处理 | 12%(90/694) | 2017-7-24 |
| 1835 | 宇航员 | 43%(2710/6206) | 2017-9-20 |
| 1836 | Alignment | 32%(5740/17445) | 2017-9-22 |
| 1837 | Balance | 62%(9573/15231) | 2017-9-18 |
| 1838 | Banana | 36%(876/2387) | 2017-7-22 |
| 1839 | Cattle | 17%(48/275) | 2017-7-22 |
| 1840 | Eqs | 49%(8333/16969) | 2017-9-20 |
| 1841 | Meadow | 18%(98/537) | 2017-8-31 |
| 1842 | Parking | 30%(40/131) | 2017-7-22 |
| 1843 | Shire | 16%(20/122) | 2017-7-22 |
| 1844 | Sum | 65%(7154/10896) | 2017-9-21 |
| 1845 | Sumdiv | 24%(5792/23268) | 2017-9-21 |
| 1846 | System | 33%(107/318) | 2017-8-5 |
| 1847 | Tram | 37%(6177/16658) | 2017-9-21 |
| 1848 | Tree | 34%(1340/3846) | 2017-8-27 |
| 1849 | Two | 53%(902/1701) | 2017-9-8 |
| 1850 | Code | 47%(4763/9947) | 2017-9-21 |
| 1851 | Map | 22%(153/675) | 2017-7-22 |
| 1852 | Ants | 41%(8275/19886) | 2017-9-21 |
| 1853 | Cat | 25%(483/1889) | 2017-9-4 |
| 1854 | Evil Straw Warts Live | 28%(299/1035) | 2017-9-11 |
| 1855 | Mint | 34%(583/1672) | 2017-7-22 |
| 1856 | Sea Battle | 35%(1148/3239) | 2017-8-9 |
| 1857 | To Europe! To Europe! | 33%(323/951) | 2017-8-27 |
| 1858 | Interesting Maze Game | 31%(97/310) | 2017-7-22 |
| 1859 | The Perfect Symmetry | 38%(535/1381) | 2017-7-22 |
| 1860 | Currency Exchange | 38%(12199/32065) | 2017-9-21 |
| 1861 | Network | 40%(6978/17340) | 2017-9-20 |
| 1862 | Stripies | 45%(8064/17909) | 2017-9-20 |
| 1863 | Subnumber | 11%(112/953) | 2017-7-22 |
| 1864 | Funny Card Game | 15%(18/118) | 2016-8-20 |
| 1865 | Practice | 61%(82/133) | 2017-3-5 |
| 1866 | Help! | 28%(99/347) | 2017-7-22 |
| 1867 | Treequivalence | 28%(101/356) | 2017-7-22 |
| 1868 | Antiarithmetic? | 50%(713/1418) | 2017-8-6 |
| 1869 | Test | 48%(120/245) | 2017-7-22 |
| 1870 | Bee Breeding | 41%(736/1770) | 2017-9-20 |
| 1871 | Bullet Hole | 6%(22/341) | 2017-7-22 |
| 1872 | A Dicey Problem | 32%(328/1004) | 2017-9-1 |
| 1873 | The Fortified Forest | 27%(1916/6900) | 2017-9-21 |
| 1874 | Trade on Verweggistan | 28%(535/1864) | 2017-8-20 |
| 1875 | Robot | 31%(61/196) | 2017-7-22 |
| 1876 | The Letter Carrier's Rounds | 31%(110/354) | 2017-9-18 |
| 1877 | Flooded! | 29%(1934/6523) | 2017-9-20 |
| 1878 | Jill's Bike | 25%(361/1412) | 2017-8-11 |
| 1879 | Tempus et mobilius Time and motion | 59%(508/855) | 2017-7-22 |
| 1880 | Variable Radix Huffman Encoding | 29%(257/880) | 2017-7-22 |
| 1881 | Sail Race | 25%(19/75) | 2017-7-22 |
| 1882 | Stamps | 34%(546/1568) | 2017-9-8 |
| 1883 | Theseus and the Minotaur | 17%(28/164) | 2017-8-24 |
| 1884 | Train Time | 9%(40/411) | 2017-7-22 |
| 1885 | Uncompress | 34%(325/943) | 2017-7-22 |
| 1886 | Borrowers | 23%(362/1523) | 2017-8-29 |
| 1887 | Testing the CATCHER | 36%(6829/18593) | 2017-9-16 |
| 1888 | Crossword Answers | 43%(554/1280) | 2017-9-6 |
| 1889 | Package Pricing | 10%(52/477) | 2017-7-22 |
| 1890 | Switching Channels | 55%(241/435) | 2017-7-22 |
| 1891 | Typesetting | 11%(35/294) | 2017-7-22 |
| 1892 | VTAS - Vessel Traffic Advisory Service | 2%(3/142) | 2017-7-22 |
| 1893 | Monitoring Wheelchair Patients | 18%(78/424) | 2017-7-22 |
| 1894 | Alternative Scale of Notation | 36%(783/2117) | 2017-8-15 |
| 1895 | Bring Them There | 25%(211/820) | 2017-7-22 |
| 1896 | Code Formatting | 35%(530/1509) | 2017-8-5 |
| 1897 | Data Mining | 28%(102/362) | 2017-7-22 |
| 1898 | Entropy | 23%(215/908) | 2017-9-14 |
| 1899 | Farmer Bill's Problem | 26%(646/2468) | 2017-7-22 |
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