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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 |
| 1892 | VTAS - Vessel Traffic Advisory Service | 1%(4/337) | Oct 15, 2025 |
| 1881 | Sail Race | 16%(20/125) | Oct 15, 2025 |
| 1864 | Funny Card Game | 11%(21/181) | Oct 21, 2025 |
| 1871 | Bullet Hole | 6%(25/404) | Oct 15, 2025 |
| 1843 | Shire | 16%(25/149) | Oct 23, 2025 |
| 1820 | Expression | 1%(27/2387) | Oct 15, 2025 |
| 1883 | Theseus and the Minotaur | 9%(29/305) | Oct 15, 2025 |
| 1814 | Polynomial | 6%(29/440) | Oct 15, 2025 |
| 1891 | Typesetting | 11%(41/358) | Oct 15, 2025 |
| 1802 | Ancient Plates | 13%(43/330) | Oct 15, 2025 |
| 1884 | Train Time | 8%(45/501) | Oct 15, 2025 |
| 1842 | Parking | 21%(46/215) | Oct 15, 2025 |
| 1807 | Mayan Dates | 27%(46/170) | Oct 15, 2025 |
| 1839 | Cattle | 16%(60/357) | Oct 15, 2025 |
| 1889 | Package Pricing | 11%(62/551) | Nov 21, 2025 |
| 1875 | Robot | 20%(65/317) | Oct 15, 2025 |
| 1824 | TwoFour | 28%(79/274) | Oct 15, 2025 |
| 1893 | Monitoring Wheelchair Patients | 17%(81/466) | Oct 15, 2025 |
| 1829 | 火力防御网 | 21%(81/374) | Oct 15, 2025 |
| 1865 | Practice | 44%(87/197) | Nov 20, 2025 |
| 1834 | 线段处理 | 12%(94/758) | Nov 21, 2025 |
| 1801 | Formula Racing | 22%(95/414) | Oct 15, 2025 |
| 1858 | Interesting Maze Game | 26%(104/399) | Oct 15, 2025 |
| 1841 | Meadow | 16%(105/640) | Nov 21, 2025 |
| 1867 | Treequivalence | 23%(113/473) | Oct 15, 2025 |
| 1846 | System | 26%(114/430) | Nov 21, 2025 |
| 1866 | Help! | 25%(117/456) | Nov 21, 2025 |
| 1897 | Data Mining | 25%(119/466) | Oct 21, 2025 |
| 1812 | Zuma Game | 19%(123/617) | Nov 21, 2025 |
| 1876 | The Letter Carrier's Rounds | 29%(128/439) | Oct 15, 2025 |
| 1863 | Subnumber | 11%(130/1110) | Oct 15, 2025 |
| 1869 | Test | 38%(131/338) | Nov 21, 2025 |
| 1803 | Box Art | 13%(149/1115) | Nov 21, 2025 |
| 1822 | Fence2 | 36%(157/436) | Nov 21, 2025 |
| 1825 | Young | 22%(166/729) | Nov 21, 2025 |
| 1851 | Map | 21%(167/792) | Nov 21, 2025 |
| 1810 | Covering | 16%(169/1053) | Nov 21, 2025 |
| 1805 | Friends | 21%(172/800) | Oct 15, 2025 |
| 1817 | Traffic Jam | 45%(173/382) | Nov 21, 2025 |
| 1813 | Overlapped Shapes | 28%(192/676) | Nov 21, 2025 |
| 1800 | Magic Trick | 21%(204/932) | Nov 21, 2025 |
| 1898 | Entropy | 21%(221/1007) | Oct 21, 2025 |
| 1890 | Switching Channels | 50%(254/502) | Nov 21, 2025 |
| 1831 | 不定方程组 | 29%(272/912) | Oct 15, 2025 |
| 1880 | Variable Radix Huffman Encoding | 27%(284/1019) | Nov 21, 2025 |
| 1895 | Bring Them There | 27%(301/1095) | Oct 15, 2025 |
| 1885 | Uncompress | 34%(358/1041) | Nov 21, 2025 |
| 1872 | A Dicey Problem | 32%(359/1106) | Nov 21, 2025 |
| 1878 | Jill's Bike | 25%(391/1536) | Oct 23, 2025 |
| 1886 | Borrowers | 23%(396/1668) | Oct 15, 2025 |
| 1818 | ATP | 39%(398/1010) | Oct 15, 2025 |
| 1827 | A Bunch Of Monsters | 39%(438/1105) | Nov 21, 2025 |
| 1832 | 连环锁 | 32%(471/1471) | Nov 21, 2025 |
| 1857 | To Europe! To Europe! | 34%(489/1414) | Nov 21, 2025 |
| 1819 | Disks | 25%(519/2073) | Oct 15, 2025 |
| 1853 | Cat | 24%(532/2159) | Nov 21, 2025 |
| 1896 | Code Formatting | 34%(553/1611) | Oct 15, 2025 |
| 1879 | Tempus et mobilius Time and motion | 58%(553/947) | Oct 15, 2025 |
| 1859 | The Perfect Symmetry | 38%(569/1487) | Nov 21, 2025 |
| 1882 | Stamps | 34%(590/1729) | Oct 15, 2025 |
| 1855 | Mint | 34%(604/1738) | Nov 21, 2025 |
| 1874 | Trade on Verweggistan | 27%(607/2170) | Nov 21, 2025 |
| 1888 | Crossword Answers | 41%(625/1505) | Nov 21, 2025 |
| 1826 | The Best Farm | 29%(658/2230) | Nov 20, 2025 |
| 1899 | Farmer Bill's Problem | 26%(684/2603) | Nov 21, 2025 |
| 1808 | Quadratic Residues | 33%(687/2026) | Nov 20, 2025 |
| 1868 | Antiarithmetic? | 49%(745/1495) | Nov 21, 2025 |
| 1809 | Regetni | 38%(760/1998) | Nov 20, 2025 |
| 1870 | Bee Breeding | 42%(797/1883) | Oct 15, 2025 |
| 1894 | Alternative Scale of Notation | 37%(842/2253) | Nov 21, 2025 |
| 1838 | Banana | 36%(922/2505) | Nov 21, 2025 |
| 1854 | Evil Straw Warts Live | 29%(979/3306) | Nov 21, 2025 |
| 1856 | Sea Battle | 34%(1249/3580) | Nov 21, 2025 |
| 1806 | Manhattan 2025 | 45%(1254/2768) | Nov 20, 2025 |
| 1823 | Hotel | 42%(1418/3310) | Nov 21, 2025 |
| 1848 | Tree | 35%(1636/4609) | Oct 15, 2025 |
| 1849 | Two | 52%(1925/3633) | Oct 15, 2025 |
| 1816 | Wild Words | 27%(2073/7473) | Nov 21, 2025 |
| 1877 | Flooded! | 28%(2501/8798) | Nov 21, 2025 |
| 1873 | The Fortified Forest | 27%(2652/9641) | Nov 21, 2025 |
| 1828 | Monkeys' Pride | 33%(3321/9891) | Nov 21, 2025 |
| 1821 | Fence | 34%(3408/9991) | Nov 20, 2025 |
| 1815 | Friendship | 27%(3559/12752) | Oct 15, 2025 |
| 1835 | 宇航员 | 40%(3756/9217) | Nov 20, 2025 |
| 1830 | 开关问题 | 40%(5804/14414) | Nov 20, 2025 |
| 1850 | Code | 48%(5917/12230) | Nov 20, 2025 |
| 1887 | Testing the CATCHER | 36%(7295/19831) | Nov 21, 2025 |
| 1844 | Sum | 65%(7521/11502) | Nov 20, 2025 |
| 1836 | Alignment | 31%(7635/23861) | Nov 21, 2025 |
| 1861 | Network | 40%(7989/19788) | Nov 20, 2025 |
| 1804 | Brainman | 47%(8978/18938) | Nov 20, 2025 |
| 1833 | 排列 | 35%(9772/27774) | Nov 21, 2025 |
| 1840 | Eqs | 47%(9817/20711) | Nov 21, 2025 |
| 1847 | Tram | 37%(10179/27052) | Nov 20, 2025 |
| 1845 | Sumdiv | 23%(10544/44088) | Nov 21, 2025 |
| 1811 | Prime Test | 27%(12245/45270) | Nov 23, 2025 |
| 1862 | Stripies | 42%(12659/29954) | Nov 15, 2025 |
| 1837 | Balance | 61%(13384/21615) | Nov 21, 2025 |
| 1852 | Ants | 35%(17384/48780) | Nov 20, 2025 |
| 1860 | Currency Exchange | 39%(23480/60197) | Nov 23, 2025 |
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