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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%(203/924) | 2020-11-17 |
| 1801 | Formula Racing | 24%(89/369) | 2022-3-2 |
| 1802 | Ancient Plates | 12%(42/328) | 2023-2-8 |
| 1803 | Box Art | 13%(145/1108) | 2022-6-2 |
| 1804 | Brainman | 47%(8560/17944) | 2023-2-7 |
| 1805 | Friends | 21%(166/758) | 2021-8-27 |
| 1806 | Manhattan 2025 | 45%(1239/2731) | 2022-7-22 |
| 1807 | Mayan Dates | 27%(46/169) | 2022-6-20 |
| 1808 | Quadratic Residues | 33%(677/1997) | 2021-12-13 |
| 1809 | Regetni | 38%(755/1969) | 2022-9-23 |
| 1810 | Covering | 16%(169/1049) | 2022-10-17 |
| 1811 | Prime Test | 26%(11740/43577) | 2023-2-6 |
| 1812 | Zuma Game | 19%(119/603) | 2021-8-27 |
| 1813 | Overlapped Shapes | 28%(184/649) | 2021-8-27 |
| 1814 | Polynomial | 6%(29/438) | 2021-8-27 |
| 1815 | Friendship | 27%(3545/12664) | 2022-12-31 |
| 1816 | Wild Words | 27%(2029/7262) | 2023-1-17 |
| 1817 | Traffic Jam | 46%(168/359) | 2022-6-2 |
| 1818 | ATP | 39%(397/1005) | 2022-9-8 |
| 1819 | Disks | 24%(483/1947) | 2022-11-20 |
| 1820 | Expression | 1%(27/2386) | 2021-8-15 |
| 1821 | Fence | 33%(3060/9009) | 2023-2-8 |
| 1822 | Fence2 | 37%(150/398) | 2021-6-29 |
| 1823 | Hotel | 42%(1376/3231) | 2022-12-9 |
| 1824 | TwoFour | 29%(79/271) | 2021-8-27 |
| 1825 | Young | 22%(160/697) | 2022-1-19 |
| 1826 | The Best Farm | 29%(652/2212) | 2022-10-12 |
| 1827 | A Bunch Of Monsters | 39%(430/1086) | 2021-12-31 |
| 1828 | Monkeys' Pride | 33%(3277/9812) | 2022-11-29 |
| 1829 | 火力防御网 | 21%(79/363) | 2021-9-1 |
| 1830 | 开关问题 | 40%(5602/13867) | 2023-1-17 |
| 1831 | 不定方程组 | 29%(268/899) | 2022-11-18 |
| 1832 | 连环锁 | 32%(466/1456) | 2021-8-27 |
| 1833 | 排列 | 35%(9550/26915) | 2023-1-8 |
| 1834 | 线段处理 | 12%(93/746) | 2022-6-7 |
| 1835 | 宇航员 | 40%(3726/9151) | 2022-11-16 |
| 1836 | Alignment | 32%(7467/23131) | 2023-1-5 |
| 1837 | Balance | 62%(12124/19310) | 2023-2-4 |
| 1838 | Banana | 36%(915/2485) | 2022-12-2 |
| 1839 | Cattle | 16%(56/330) | 2022-2-24 |
| 1840 | Eqs | 47%(9722/20425) | 2023-1-30 |
| 1841 | Meadow | 17%(103/602) | 2021-5-31 |
| 1842 | Parking | 21%(46/214) | 2021-8-27 |
| 1843 | Shire | 17%(25/144) | 2021-10-18 |
| 1844 | Sum | 65%(7496/11469) | 2022-12-18 |
| 1845 | Sumdiv | 24%(10118/41842) | 2023-2-8 |
| 1846 | System | 26%(112/422) | 2021-8-17 |
| 1847 | Tram | 37%(9826/26127) | 2023-2-8 |
| 1848 | Tree | 35%(1584/4423) | 2022-10-12 |
| 1849 | Two | 54%(1781/3272) | 2023-2-2 |
| 1850 | Code | 48%(5782/11932) | 2023-2-8 |
| 1851 | Map | 21%(163/776) | 2021-8-18 |
| 1852 | Ants | 36%(16419/45284) | 2023-2-8 |
| 1853 | Cat | 25%(530/2054) | 2022-12-10 |
| 1854 | Evil Straw Warts Live | 30%(901/2983) | 2023-1-31 |
| 1855 | Mint | 34%(603/1728) | 2021-8-27 |
| 1856 | Sea Battle | 34%(1243/3564) | 2022-5-25 |
| 1857 | To Europe! To Europe! | 33%(416/1244) | 2022-11-22 |
| 1858 | Interesting Maze Game | 25%(102/394) | 2022-4-5 |
| 1859 | The Perfect Symmetry | 38%(557/1440) | 2022-5-25 |
| 1860 | Currency Exchange | 38%(21423/55193) | 2023-2-8 |
| 1861 | Network | 40%(7907/19597) | 2023-2-6 |
| 1862 | Stripies | 42%(12256/29039) | 2023-2-8 |
| 1863 | Subnumber | 11%(127/1099) | 2022-6-30 |
| 1864 | Funny Card Game | 11%(21/176) | 2021-7-14 |
| 1865 | Practice | 44%(87/195) | 2021-6-4 |
| 1866 | Help! | 25%(108/424) | 2022-4-23 |
| 1867 | Treequivalence | 23%(110/467) | 2022-8-27 |
| 1868 | Antiarithmetic? | 50%(738/1475) | 2022-3-14 |
| 1869 | Test | 39%(128/327) | 2022-1-28 |
| 1870 | Bee Breeding | 42%(777/1841) | 2022-11-9 |
| 1871 | Bullet Hole | 6%(25/403) | 2021-8-27 |
| 1872 | A Dicey Problem | 32%(355/1088) | 2022-7-25 |
| 1873 | The Fortified Forest | 27%(2512/9141) | 2023-2-6 |
| 1874 | Trade on Verweggistan | 27%(605/2164) | 2022-7-13 |
| 1875 | Robot | 20%(65/312) | 2021-8-27 |
| 1876 | The Letter Carrier's Rounds | 28%(126/435) | 2021-8-27 |
| 1877 | Flooded! | 28%(2481/8732) | 2022-12-22 |
| 1878 | Jill's Bike | 25%(385/1500) | 2022-11-16 |
| 1879 | Tempus et mobilius Time and motion | 58%(545/938) | 2022-12-2 |
| 1880 | Variable Radix Huffman Encoding | 27%(278/1010) | 2022-4-25 |
| 1881 | Sail Race | 18%(20/107) | 2021-8-27 |
| 1882 | Stamps | 34%(588/1723) | 2022-11-16 |
| 1883 | Theseus and the Minotaur | 10%(29/287) | 2022-6-28 |
| 1884 | Train Time | 8%(42/474) | 2021-8-27 |
| 1885 | Uncompress | 34%(356/1029) | 2022-11-16 |
| 1886 | Borrowers | 23%(395/1662) | 2022-1-9 |
| 1887 | Testing the CATCHER | 36%(7253/19758) | 2022-12-3 |
| 1888 | Crossword Answers | 41%(623/1498) | 2022-12-2 |
| 1889 | Package Pricing | 11%(62/548) | 2021-8-27 |
| 1890 | Switching Channels | 51%(254/495) | 2022-12-9 |
| 1891 | Typesetting | 11%(37/334) | 2021-8-26 |
| 1892 | VTAS - Vessel Traffic Advisory Service | 1%(4/323) | 2021-8-27 |
| 1893 | Monitoring Wheelchair Patients | 17%(79/457) | 2021-5-6 |
| 1894 | Alternative Scale of Notation | 37%(832/2228) | 2022-9-11 |
| 1895 | Bring Them There | 27%(295/1063) | 2022-7-24 |
| 1896 | Code Formatting | 34%(551/1600) | 2022-5-25 |
| 1897 | Data Mining | 25%(115/448) | 2022-5-25 |
| 1898 | Entropy | 21%(218/996) | 2022-8-8 |
| 1899 | Farmer Bill's Problem | 26%(677/2587) | 2022-5-25 |
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