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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%(203/924) | 2020-11-17 |
| 1801 | Formula Racing | 24%(89/369) | 2022-3-2 |
| 1802 | Ancient Plates | 12%(42/326) | 2022-5-28 |
| 1803 | Box Art | 13%(145/1108) | 2022-6-2 |
| 1804 | Brainman | 47%(8381/17488) | 2022-8-10 |
| 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%(754/1968) | 2022-5-17 |
| 1810 | Covering | 16%(169/1048) | 2020-6-5 |
| 1811 | Prime Test | 26%(11678/43388) | 2022-8-10 |
| 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 | 28%(3535/12618) | 2022-5-7 |
| 1816 | Wild Words | 27%(1986/7181) | 2022-8-8 |
| 1817 | Traffic Jam | 46%(168/359) | 2022-6-2 |
| 1818 | ATP | 39%(396/1004) | 2021-8-27 |
| 1819 | Disks | 24%(480/1939) | 2022-6-29 |
| 1820 | Expression | 1%(27/2386) | 2021-8-15 |
| 1821 | Fence | 34%(2983/8761) | 2022-8-10 |
| 1822 | Fence2 | 37%(150/398) | 2021-6-29 |
| 1823 | Hotel | 43%(1365/3166) | 2022-4-17 |
| 1824 | TwoFour | 29%(79/271) | 2021-8-27 |
| 1825 | Young | 22%(160/697) | 2022-1-19 |
| 1826 | The Best Farm | 29%(652/2211) | 2022-1-19 |
| 1827 | A Bunch Of Monsters | 39%(430/1086) | 2021-12-31 |
| 1828 | Monkeys' Pride | 33%(3276/9808) | 2022-4-29 |
| 1829 | 火力防御网 | 21%(79/363) | 2021-9-1 |
| 1830 | 开关问题 | 40%(5537/13717) | 2022-8-3 |
| 1831 | 不定方程组 | 29%(268/898) | 2021-9-3 |
| 1832 | 连环锁 | 32%(466/1456) | 2021-8-27 |
| 1833 | 排列 | 35%(9499/26727) | 2022-8-8 |
| 1834 | 线段处理 | 12%(93/746) | 2022-6-7 |
| 1835 | 宇航员 | 40%(3712/9117) | 2022-8-1 |
| 1836 | Alignment | 32%(7411/22983) | 2022-7-30 |
| 1837 | Balance | 62%(12048/19189) | 2022-8-4 |
| 1838 | Banana | 36%(914/2483) | 2022-8-4 |
| 1839 | Cattle | 16%(56/330) | 2022-2-24 |
| 1840 | Eqs | 47%(9660/20223) | 2022-8-4 |
| 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%(7490/11451) | 2022-8-6 |
| 1845 | Sumdiv | 24%(9871/40855) | 2022-8-5 |
| 1846 | System | 26%(112/422) | 2021-8-17 |
| 1847 | Tram | 37%(9695/25816) | 2022-8-10 |
| 1848 | Tree | 35%(1583/4422) | 2022-8-2 |
| 1849 | Two | 54%(1758/3225) | 2022-7-18 |
| 1850 | Code | 48%(5762/11892) | 2022-8-6 |
| 1851 | Map | 21%(163/776) | 2021-8-18 |
| 1852 | Ants | 36%(15997/43916) | 2022-8-10 |
| 1853 | Cat | 25%(525/2041) | 2022-3-21 |
| 1854 | Evil Straw Warts Live | 30%(888/2933) | 2022-7-4 |
| 1855 | Mint | 34%(603/1728) | 2021-8-27 |
| 1856 | Sea Battle | 34%(1243/3564) | 2022-5-25 |
| 1857 | To Europe! To Europe! | 33%(416/1242) | 2021-12-16 |
| 1858 | Interesting Maze Game | 25%(102/394) | 2022-4-5 |
| 1859 | The Perfect Symmetry | 38%(557/1440) | 2022-5-25 |
| 1860 | Currency Exchange | 39%(20683/52930) | 2022-8-11 |
| 1861 | Network | 40%(7901/19572) | 2022-8-10 |
| 1862 | Stripies | 41%(11983/28546) | 2022-8-8 |
| 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 | 25%(107/422) | 2021-6-7 |
| 1868 | Antiarithmetic? | 50%(738/1475) | 2022-3-14 |
| 1869 | Test | 39%(128/327) | 2022-1-28 |
| 1870 | Bee Breeding | 42%(775/1839) | 2022-6-24 |
| 1871 | Bullet Hole | 6%(25/403) | 2021-8-27 |
| 1872 | A Dicey Problem | 32%(355/1088) | 2022-7-25 |
| 1873 | The Fortified Forest | 27%(2510/9125) | 2022-7-6 |
| 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%(2475/8718) | 2022-8-1 |
| 1878 | Jill's Bike | 25%(384/1499) | 2021-8-27 |
| 1879 | Tempus et mobilius Time and motion | 58%(544/934) | 2022-2-5 |
| 1880 | Variable Radix Huffman Encoding | 27%(278/1010) | 2022-4-25 |
| 1881 | Sail Race | 18%(20/107) | 2021-8-27 |
| 1882 | Stamps | 34%(587/1718) | 2022-6-24 |
| 1883 | Theseus and the Minotaur | 10%(29/287) | 2022-6-28 |
| 1884 | Train Time | 8%(42/474) | 2021-8-27 |
| 1885 | Uncompress | 34%(353/1024) | 2022-7-2 |
| 1886 | Borrowers | 23%(395/1662) | 2022-1-9 |
| 1887 | Testing the CATCHER | 36%(7248/19746) | 2022-8-8 |
| 1888 | Crossword Answers | 41%(623/1496) | 2022-4-22 |
| 1889 | Package Pricing | 11%(62/548) | 2021-8-27 |
| 1890 | Switching Channels | 51%(253/492) | 2021-8-27 |
| 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%(829/2218) | 2021-11-10 |
| 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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