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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 |
| 1900 | Game | 28%(288/1010) | Oct 16, 2026 |
| 1901 | Hypertransmission | 22%(456/2057) | Oct 16, 2026 |
| 1902 | Illumination | 17%(61/356) | Oct 17, 2026 |
| 1903 | Jurassic Remains | 33%(783/2356) | Oct 18, 2026 |
| 1904 | King's Quest | 36%(4314/11794) | Oct 10, 2026 |
| 1905 | Expanding Rods | 26%(6321/23416) | Oct 21, 2026 |
| 1906 | Three powers | 45%(2091/4595) | Oct 10, 2026 |
| 1907 | Work Reduction | 35%(642/1806) | Oct 10, 2026 |
| 1908 | Grid Speed | 11%(46/403) | Oct 16, 2026 |
| 1909 | Marbles on a tree | 46%(912/1951) | Oct 9, 2026 |
| 1910 | Adam's Genes | 13%(38/292) | Oct 16, 2026 |
| 1911 | A Well-Formed Problem | 19%(94/491) | Oct 16, 2026 |
| 1912 | A highway and the seven dwarfs | 20%(750/3728) | Oct 9, 2026 |
| 1913 | Cocktails | 17%(105/610) | Oct 16, 2026 |
| 1914 | Cramer's Rule | 24%(799/3282) | Oct 9, 2026 |
| 1915 | Knight Moves | 45%(18135/39715) | Oct 12, 2026 |
| 1916 | Rat Attack | 33%(378/1136) | Oct 9, 2026 |
| 1917 | Automatic Poetry | 48%(1264/2612) | Oct 9, 2026 |
| 1918 | Ranking List | 29%(530/1800) | Oct 9, 2026 |
| 1919 | Ship Journey | 14%(63/431) | Oct 16, 2026 |
| 1920 | Towers of Hanoi | 44%(1254/2813) | Oct 9, 2026 |
| 1921 | Paper Cut | 20%(80/400) | Oct 16, 2026 |
| 1922 | Ride to School | 39%(10601/26672) | Oct 11, 2026 |
| 1923 | Fourier's Lines | 33%(948/2856) | Oct 9, 2026 |
| 1924 | The Treasure | 20%(495/2462) | Oct 9, 2026 |
| 1925 | Spiderman | 20%(1648/8014) | Oct 20, 2026 |
| 1926 | Pollution | 27%(1151/4249) | Oct 9, 2026 |
| 1927 | Area in Triangle | 44%(998/2233) | Oct 9, 2026 |
| 1928 | The Peanuts | 41%(3490/8507) | Oct 9, 2026 |
| 1929 | Calories from Fat | 51%(656/1273) | Oct 9, 2026 |
| 1930 | Dead Fraction | 35%(2141/5967) | Oct 9, 2026 |
| 1931 | Biometrics | 41%(460/1105) | Oct 9, 2026 |
| 1932 | XYZZY | 28%(1350/4774) | Oct 9, 2026 |
| 1933 | A Brief Gerrymander | 33%(110/325) | Oct 16, 2026 |
| 1934 | Trip | 26%(2327/8922) | Oct 9, 2026 |
| 1935 | Journey | 38%(969/2498) | Oct 9, 2026 |
| 1936 | All in All | 41%(17404/42172) | Oct 9, 2026 |
| 1937 | Balanced Food | 21%(88/403) | Oct 16, 2026 |
| 1938 | California Jones and the Gate to Freedom | 38%(320/825) | Oct 9, 2026 |
| 1939 | Diplomatic License | 39%(2866/7292) | Oct 9, 2026 |
| 1940 | Polygon Programming with Ease | 61%(885/1435) | Oct 9, 2026 |
| 1941 | The Sierpinski Fractal | 40%(2646/6460) | Oct 9, 2026 |
| 1942 | Paths on a Grid | 27%(9983/35947) | Oct 9, 2026 |
| 1943 | Hall of Fountains | 35%(319/909) | Oct 10, 2026 |
| 1944 | Fiber Communications | 30%(1557/5139) | Oct 10, 2026 |
| 1945 | Power Hungry Cows | 24%(1789/7443) | Oct 19, 2026 |
| 1946 | Cow Cycling | 54%(1798/3284) | Oct 10, 2026 |
| 1947 | Rebuilding Roads | 45%(7262/15857) | Oct 10, 2026 |
| 1948 | Triangular Pastures | 33%(3439/10397) | Oct 10, 2026 |
| 1949 | Chores | 47%(3619/7699) | Oct 10, 2026 |
| 1950 | Dessert | 36%(2456/6772) | Oct 10, 2026 |
| 1951 | Extra Krunch | 25%(1982/7812) | Oct 10, 2026 |
| 1952 | BUY LOW, BUY LOWER | 35%(4530/12685) | Oct 13, 2026 |
| 1953 | World Cup Noise | 43%(12008/27692) | Oct 10, 2026 |
| 1954 | Warez Test | 11%(41/350) | Oct 16, 2026 |
| 1955 | Rubik's Cube | 45%(386/850) | Oct 10, 2026 |
| 1956 | Pumps and Pipes | 22%(56/251) | Oct 16, 2026 |
| 1957 | Beehives | 29%(152/515) | Oct 16, 2026 |
| 1958 | Strange Towers of Hanoi | 57%(3558/6234) | Oct 13, 2026 |
| 1959 | Darts | 57%(911/1575) | Oct 10, 2026 |
| 1960 | Time Planner | 20%(344/1719) | Oct 16, 2026 |
| 1961 | Period | 47%(12610/26588) | Oct 20, 2026 |
| 1962 | Corporative Network | 37%(1904/5049) | Oct 10, 2026 |
| 1963 | Cave Exploration | 19%(95/498) | Oct 16, 2026 |
| 1964 | City Game | 40%(2919/7257) | Oct 10, 2026 |
| 1965 | Cube Root | 26%(410/1543) | Oct 13, 2026 |
| 1966 | Cable TV Network | 47%(3000/6265) | Oct 10, 2026 |
| 1967 | Alibaba | 14%(138/956) | Oct 16, 2026 |
| 1968 | Booklets | 33%(302/890) | Oct 10, 2026 |
| 1969 | Count on Canton | 58%(5805/9986) | Oct 12, 2026 |
| 1970 | The Game | 25%(2085/8114) | Oct 10, 2026 |
| 1971 | Parallelogram Counting | 34%(2510/7205) | Oct 10, 2026 |
| 1972 | Dice Stacking | 61%(923/1513) | Oct 10, 2026 |
| 1973 | Software Company | 42%(552/1284) | Oct 10, 2026 |
| 1974 | The Happy Worm | 22%(1236/5468) | Oct 20, 2026 |
| 1975 | Median Weight Bead | 50%(2290/4505) | Oct 21, 2026 |
| 1976 | A Mini Locomotive | 55%(2958/5298) | Oct 17, 2026 |
| 1977 | Odd Loving Bakers | 33%(717/2152) | Oct 10, 2026 |
| 1978 | Hanafuda Shuffle | 57%(2496/4326) | Oct 10, 2026 |
| 1979 | Red and Black | 50%(37619/74832) | Oct 18, 2026 |
| 1980 | Unit Fraction Partition | 39%(1969/4932) | Oct 10, 2026 |
| 1981 | Circle and Points | 35%(3472/9753) | Oct 10, 2026 |
| 1982 | Water Tank | 35%(97/275) | Oct 16, 2026 |
| 1983 | Name the Crossing | 41%(151/368) | Oct 16, 2026 |
| 1984 | Navigation Nightmare | 36%(3976/10952) | Oct 10, 2026 |
| 1985 | Cow Marathon | 40%(5667/13989) | Oct 10, 2026 |
| 1986 | Distance Queries | 34%(7672/22489) | Oct 12, 2026 |
| 1987 | Distance Statistics | 35%(1067/2973) | Oct 10, 2026 |
| 1988 | Cube Stacking | 34%(13406/38561) | Oct 14, 2026 |
| 1989 | The Cow Lineup | 57%(3612/6290) | Oct 10, 2026 |
| 1990 | MooFest | 44%(6215/13836) | Oct 21, 2026 |
| 1991 | Turning in Homework | 42%(607/1424) | Oct 10, 2026 |
| 1992 | Jack | 38%(1278/3360) | Oct 10, 2026 |
| 1993 | Caleidoscope | 44%(358/803) | Oct 10, 2026 |
| 1994 | Logic | 21%(31/145) | Oct 16, 2026 |
| 1995 | Raising Modulo Numbers | 56%(16166/28575) | Oct 14, 2026 |
| 1996 | The Highest Profits | 43%(346/793) | Oct 10, 2026 |
| 1997 | Word Puzzle | 41%(525/1269) | Oct 16, 2026 |
| 1998 | Lloyd Fifteen Puzzle | 34%(270/788) | Oct 10, 2026 |
| 1999 | Quorf | 24%(130/539) | Oct 21, 2026 |
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