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list of classical problems (unsolved)


ID NAME QUALITY USERS ACC % DIFFICULTY C I
996 Continuous Fractions   1 279 37.54
9
9
1001 Babylonian Roulette   1 666 50.46
13
13
1420 Geometry and a Square   1 276 34.08
9
17
1441 The Clever Typist   1 34 8.28
17
34
1451 01 Sequence   1 99 28.63
9
26
1458 Help Blue Mary Please! (Act II)   1 85 17.83
17
1
1471 A Game of Pearls   1 45 30.86
17
9
1479 The GbAaY Kingdom   1 136 19.18
30
38
1484 Search in XML   1 20 3.07
17
17
1487 Query on a tree III   1 588 18.63
17
12
1526 Ranklist Sorting   1 28 13.10
17
34
1644 Trees   1 39 14.03
34
34
1675 Fusion Cube   1 87 50.77
1
23
1676 Text Generator   1 260 21.88
17
28
1687 Logic II   1 36 17.65
34
34
1695 Grandpa’s Rubik Cube   1 111 60.94
1698 Polygonal Line Search   1 164 62.75
9
9
1731 Counting Triangles III   1 266 33.78
1775 Boolean Logic   1 105 23.35
17
17
1784 IOICamp Sequence   1 325 12.80
1
17
1789 Huffman´s Greed   1 91 46.67
17
26
1801 Drink, on Ice   1 522 42.66
9
9
1803 Fold   1 60 43.21
1
34
1825 Free tour II   1 572 14.29
26
34
1833 Sudoku   1 54 30.66
17
17
1835 The SetStack Computer   1 171 28.92
26
17
1869 Making Mountains Out Of Molehills   1 17 17.05
34
17
1874 Burrows Wheeler Precompression   1 427 34.11
17
26
1878 Farmers Cattle   1 57 36.89
34
34
1879 Game Time   1 101 22.17
34
34
1961 Roman Roads   1 103 31.59
9
17
1991 Another Continuous Fractions Problem   1 84 19.97
34
17
2009 Cryptography   1 142 4.79
1
34
2054 Gates of Logic   1 37 22.91
17
17
2056 Rectangular Polygon   1 136 48.14
1
17
2131 Get Back!   1 55 40.67
17
17
2152 Hilbert Curve   1 13 16.29
34
34
2171 Ambiguous Codes   1 85 39.47
2172 Ballroom Lights   1 35 32.94
34
17
2173 Car Plates Competition   1 261 42.05
17
17
2179 ICPC Scoreboard   1 180 29.76
17
17
2185 Musical Optimization   1 73 43.15
2189 Making Pairs   1 48 16.54
34
42
2274 Island Hopping   1 207 25.14
17
1
2276 Partitions   1 24 13.02
34
26
2317 Bracket Sequence   1 57 23.73
26
34
2324 Mario   1 63 14.00
34
34
2419 G-Line Grid   1 4 3.31
2421 Incrementing The Integer   1 53 24.29
17
50
2529 Model Rocket Height   1 87 54.86
1
17

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