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Problems

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  ID Title Submit Solved
  1900 IP Address 1020 639
  1901 Boolean Expresions 196 34
  1902 Gear Profiles 27 6
  1903 Lazy Pianist 18 4
  1904 Power of Cryptography 494 340
  1905 Land Division Tax 61 19
  1906 Petanque 9 5
  1907 Long Night of Museums 148 17
  1908 Magic Trick 70 37
  1910 Zing Zhu’s Oyster Farm 18 11
  1911 Grandpa is Famous 144 77
  1912 Cutting Edge 8 3
  1913 Hanafuda Shuffle 93 66
  1914 Red and Black 247 181
  1915 Unit Fraction Partition 20 10
  1916 Circle and Points 149 67
  1917 Water Tank 1 0
  1918 Name the Crossing 61 2
  1919 Disputed Claims 155 79
  1920 Palindrome Problem El Borpem Ord Nilap 1060 423
  1921 Simple Statistics 44 15
  1922 Isomorphic Numbers 83 26
  1923 Macrosoft Word 78 18
  1924 Johnny the Taxi Driver 7 4
  1925 In Memory of Denis Roskin 210 145
  1926 The Game of Nubble 23 7
  1927 Traffic Control 33 10
  1928 Who Is the Real Second 27 14
  1929 The Game of Yazoo 31 9
  1930 XML+XPATH=XSLT 10 5
  1931 Agents 37 9
  1932 Boatherds 17 9
  1933 Looooops 247 68
  1934 Death to Binary? 37 14
  1935 Electricity 155 60
  1936 Firepersons 35 23
  1937 God of the Vile Baskers 7 3
  1938 Herbalists 4 0
  1939 Inglish-Number Translator 149 72
  1940 Japan Plotter Driver 14 10
  1941 Metricky cas 42 14
  1942 Foto 43 25
  1943 Jeskyne 17 8
  1944 Kod 11 8
  1945 Okrsky 56 36
  1946 Parlament 29 19
  1947 ruleta 20 14
  1948 sekretarka 110 49
  1949 BG 892 759
  1950 Cards 611 244
  1951 Circular_Road 281 149
  1952 Help! 154 66
  1953 Key 670 250
  1954 MagicBuilding 266 162
  1955 MagicForest 318 67
  1956 Polygon 13 8
  1957 MagicStar 322 36
  1958 Count the money 45 7
  1959 Cut the string 34 10
  1960 Determinant 42 13
  1961 Jump 171 87
  1962 Kinfkong's Problem 406 182
  1963 Labyrinth 73 39
  1964 Permutational Function 34 6
  1965 Polynomial 79 15
  1966 Shortest Distance Again 32 10
  1967 Sum 1509 555
  1968 Rotating Words 888 560
  1969 Table 98 56
  1970 AVL_Tree 35 22
  1971 Mondrian 709 268
  1972 Divisor 38 6
  1973 Flora's Island 58 22
  1974 Mod 9 1298 531
  1975 Paint the Circle 172 23
  1976 The Race 20 4
  1977 Mersenne Composite Numbers 27 14
  1978 Zipper 157 62
  1979 Lenny's Lucky Lotto Lists 50 31
  1980 Stacking Cylinders 61 40
  1981 Going Home 144 93
  1982 Specialized Four-Digit Numbers 267 207
  1983 Jill's Tour Paths 126 57
  1984 Boundaries on 6 5
  1985 Rate of Return 102 52
  1986 A Card Trick 10 5
  1987 Amphiphilic Carbon Molecules 30 6
  1988 Link and Pop -- the Block Game 12 2
  1989 The Counting Problem 75 48
  1990 Different Digits 39 10
  1991 That Nice Euler Circuit 10 8
  1992 The Floor Bricks 3 2
  1993 The Rotation Game 70 29
  1994 Tian Ji -- The Horse Racing 71 27
  1995 Islands and Bridges 27 10
  1996 Jamie's Contact Groups 138 60
  1997 Jolly Jumpers 1648 475
  1998 The Solar System 16 6
  1999 WERTYU 680 307