list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
382 Decorate the wall   213 34.97
1
17
392 Spin   38 24.40
1
17
396 Hit or Miss   129 44.62
1
1
410 Variable Radix Huffman Encoding   1 173 18.93
1
1
412 K-path cover   181 20.04
1
50
515 Collatz   1 444 42.92
1
5
682 Pairs of Integers   204 25.26
1
1
696 Truth or not   1 271 21.73
1
1
697 Matrix Words   94 25.33
1
1
702 Barn Expansion   152 23.28
1
17
729 Move your armies   78 20.24
1
1
738 Another Counting Problem   1 226 40.50
1
1
757 Thermal Luminescence   123 39.03
1
1
827 Trigonometric optimization   78 28.03
1
34
903 Double Vision   64 56.49
1
1
1421 Goods   140 29.12
1
34
1447 A Game of Toy Bricks   38 26.09
1
1
1451 01 Sequence   95 28.60
1
34
1480 Let us count 1 2 3   1 74 14.82
1
34
1675 Fusion Cube   1 79 49.18
1
26
1784 IOICamp Sequence   1 318 12.68
1
17
1876 Dragon Curves   2 174 50.12
1
17
1965 Set Cover   2 25 12.42
1
17
2009 Cryptography   1 142 4.80
1
34
2038 Rectangle Tiling   2 112 40.75
1
1
2056 Rectangular Polygon   1 134 47.66
1
17
2529 Model Rocket Height   1 80 54.27
1
17
2649 Weird sorting   1 58 26.10
1
34
3249 Typesettin   2 34 45.45
1
1
3251 Slink   15 44.44
1
1
3394 Lagrange’s Four-Square Theorem   4 529 45.92
1
9
3909 CALCULATE POW(2004,X) MOD 29   2 272 56.49
1
17
4195 GCD Determinant   1 267 45.53
1
34
4565 What is your Logo   3 916 45.94
1
13
4871 Bridge   1 154 24.16
1
34
4951 Bridges! More bridges!   1 46 16.42
1
34
5010 Lost in Madrid   1 189 31.15
1
1
5148 Get-Together at Stockholm   1 49 45.13
1
17
5463 Bird or not bird   2 115 38.84
1
17
5725 123 Sequence   2 120 23.56
1
1
6692 B - Esperanto Lessons   1 62 63.48
1
17
6819 Yet Another Assignment Problem   1 41 11.56
1
6950 A HUGE TOWER   1 126 47.40
1
34
7200 Strange Calendar   1 70 46.98
1
1
7240 Playground   2 203 41.78
1
6
7249 Perfume   2 110 15.60
1
17
7507 Wonderful Randomized Sum   3 376 40.54
1
1
7600 Milk Trading   5 183 30.24
1
28
8004 Tree Topology   2 81 44.81
1
17
8286 Perfect Matching   90 18.98
1
17

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