list of classical problems


ID NAME QUALITY USERS ACC % DIFFICULTY C I
45 Commedia dell Arte   1 217 36.87
1
17
68 Expression   151 32.54
1
34
70 Relations   1 222 26.76
1
1
92 Cutting off Squares   -1 224 42.36
1
1
185 Chase   1 211 24.56
1
34
201 The Game of Polygons   1 248 39.64
1
17
329 Calls   1 117 28.08
1
17
362 Ignore the Garbage   1 411 43.44
1
17
515 Collatz   1 430 44.04
1
6
1480 Let us count 1 2 3   1 59 13.54
1
34
1675 Fusion Cube   1 78 51.15
1
26
1784 IOICamp Sequence   1 314 12.82
1
17
1876 Dragon Curves   2 173 50.12
1
17
1965 Set Cover   2 25 12.88
1
17
2009 Cryptography   1 130 4.44
1
34
2038 Rectangle Tiling   2 105 41.82
1
1
2529 Model Rocket Height   1 78 53.70
1
17
2649 Weird sorting   1 56 24.90
1
34
2878 Knights of the Round Table   1 238 15.09
1
17
3249 Typesettin   1 30 50.00
1
1
3251 Slink   15 47.06
1
1
3394 Lagrange’s Four-Square Theorem   4 504 45.50
1
9
3909 CALCULATE POW(2004,X) MOD 29   2 268 57.32
1
17
4195 GCD Determinant   1 251 45.54
1
34
4565 What is your Logo   2 909 45.80
1
13
4871 Bridge   1 148 23.69
1
34
4951 Bridges! More bridges!   1 39 14.54
1
34
5010 Lost in Madrid   1 185 30.74
1
1
5148 Get-Together at Stockholm   1 47 45.37
1
17
5463 Bird or not bird   2 114 39.15
1
17
5725 123 Sequence   2 118 23.68
1
1
6692 B - Esperanto Lessons   1 60 62.39
1
17
6819 Yet Another Assignment Problem   1 39 11.37
1
7200 Strange Calendar   1 69 47.39
1
1
7240 Playground   2 200 41.99
1
6
7249 Perfume   2 89 15.40
1
17
7507 Wonderful Randomized Sum   3 328 39.24
1
1
7600 Milk Trading   5 180 30.66
1
28
8004 Tree Topology   2 78 46.46
1
17
8286 Perfect Matching   85 18.57
1
17
8330 Giant fountain   1 26 46.74
1
17
8420 Finding Minimum   1 69 36.36
1
17
8769 String distance   1 16 54.05
1
17
8843 Complete the Set   1 48 31.94
1
17
9042 HQNP Incomputable   4 44 34.36
1
9
9097 Derangements HARD   1 71 53.09
1
17
9507 Mario and Mushrooms   337 56.92
1
34
9892 Pool construction   1 81 55.75
1
34
9934 Alice and Bob   1 98 28.27
1
34
10078 Happy Telephones   2 287 48.74
1
1

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