Welcome to ZOJ
Information
Select Problem
Runs
Ranklist
ZOJ Problem Set Vol 9
Vol 1   Vol 2   Vol 3   Vol 4   Vol 5   Vol 6   Vol 7   Vol 8   Vol 9   Vol 10   Vol 11   Vol 12   Vol 13   Vol 14   Vol 15   Vol 16   Vol 17   Vol 18   Vol 19   Vol 20   Vol 21   Vol 22   Vol 23   Vol 24   Vol 25   Vol 26   Vol 27   Vol 28   Vol 29   Vol 30  
ID Title Ratio (AC/All)
1801 EKG Sequence 38.69% (101/261)
1802 Phone Home 47.59% (188/395)
1803 Polly Nomials 46.98% (78/166)
1804 Pushing Boxes 50.85% (89/175)
1805 Squadtrees 40.63% (280/689)
1806 This Takes the Cake 49.50% (99/200)
1807 Bulk Mailing 25.97% (20/77)
1808 Immediate Decodability 48.57% (1231/2534)
1809 File Mapping 30.81% (49/159)
1810 The Gourmet Club 26.82% (11/41)
1811 Chutes and Ladders 71.17% (121/170)
1812 Stamps 36.55% (102/279)
1813 Biker's Trip Odometer 55.64% (3041/5465)
1814 Candy Sharing Game 62.65% (1042/1663)
1815 Peg Game 55.00% (33/60)
1816 Taxation With Representation Overdone 37.03% (10/27)
1817 It's Logical 55.88% (38/68)
1818 Obstructed Rook Circuits 36.84% (35/95)
1819 Rhyme Schemes 59.59% (236/396)
1820 Fully Diversified Sequences of Sets 59.30% (51/86)
1821 Exocenter of a Triangle 36.03% (120/333)
1822 Bean Counting 18.57% (68/366)
1823 Factoring Large Numbers 41.21% (833/2021)
1824 Maze Traversal 35.09% (737/2100)
1825 Compound Words 36.96% (774/2094)
1826 Pit Stop Strategy 3.44% (1/29)
1827 The Game of 31 51.87% (359/692)
1828 Fibonacci Numbers 35.94% (2251/6262)
1829 Ransom Note 30.00% (24/80)
1830 Scheme Pretty-Printing 52.63% (10/19)
1831 Substitution Cypher 31.58% (1434/4540)
1832 File Fragmentation 24.72% (91/368)
1833 Audubon's Stormy Arctic Trip 41.93% (13/31)
1834 AutoFish 15.62% (75/480)
1835 Herding Frosh 23.61% (17/72)
1836 Crypt Kicker 28.15% (29/103)
1837 Contest Scoreboard 16.82% (36/214)
1838 Crypt Kicker II 23.88% (198/829)
1839 Watching Watches 20.37% (33/162)
1840 Pousse 37.20% (16/43)
1841 Polylops 62.22% (28/45)
1842 Prime Distance 22.49% (651/2894)
1843 Yahtzee 29.89% (29/97)
1844 Request for Proposal 56.57% (99/175)
1845 Australian Voting 17.88% (61/341)
1846 Chocolate Chip Cookies 28.57% (18/63)
1847 The Trip 27.36% (384/1403)
1848 Doublets 13.00% (26/200)
1849 CDVII 10.81% (12/111)
1850 Factovisors 25.04% (468/1869)
1851 Spaghetti 22.22% (8/36)
1852 Billiard 71.66% (172/240)
1853 The Brick Stops Here 19.76% (100/506)
1854 Election 26.93% (812/3015)
1855 Maze 7.50% (12/160)
1856 Boastin' Red Socks 35.24% (92/261)
1857 Fire Station 23.16% (331/1429)
1858 Soundex 49.77% (1980/3978)
1859 Ferry Loading 22.89% (98/428)
1860 Dog & Gopher 30.44% (242/795)
1861 Gas Station Numbers 26.28% (143/544)
1862 Mine Sweeper 27.96% (563/2013)
1863 Choose and Divide 39.55% (409/1034)
1864 Old Wine Into New Bottles 26.36% (77/292)
1865 Suffidromes 23.33% (35/150)
1866 Origami 44.00% (11/25)
1867 Y2K Accounting Bug 49.72% (90/181)
1868 Airline Hub 43.97% (197/448)
1869 Snakes 33.06% (41/124)
1870 Snap 37.73% (20/53)
1871 Steps 39.30% (1396/3552)
1872 Freckles 47.97% (592/1234)
1873 Language Cardinality 14.28% (4/28)
1874 Primary Arithmetic 32.16% (1658/5155)
1875 Demerit Points 16.27% (7/43)
1876 Edit Step Ladders 31.31% (119/380)
1877 Bridge 26.78% (383/1430)
1878 Saskatchewan 10.12% (8/79)
1879 Jolly Jumpers 25.75% (2824/10964)
1880 Tug of War 27.72% (949/3423)
1881 Interpreter 33.33% (63/189)
1882 Gopher II 42.31% (380/898)
1883 Tight Words 56.10% (501/893)
1884 WERTYU 41.72% (1794/4300)
1885 Division 28.04% (145/517)
1886 Hotter Colder 42.78% (83/194)
1887 No Tipping 50.92% (55/108)
1888 Zipf's Law 34.85% (160/459)
1889 Ones 48.13% (3144/6531)
1890 Average Speed 44.80% (518/1156)
1891 Subway 22.15% (171/772)
1892 Bounding Box 66.33% (203/306)
1893 A Multiplication Game 55.74% (791/1419)
1894 Adventures in Moving - Part IV 26.54% (56/211)
1895 Pairsumonious Numbers 65.75% (48/73)
1896 Stack 'em Up 44.68% (143/320)
1897 Return of the Jedi 25.49% (13/51)
1898 Discrete Logging 54.88% (73/133)
1899 Hardwood Species 21.12% (473/2239)
1900 Forests 28.38% (386/1360)
Search Problems: